Extend the belts to wipe. Do not use any type of detergent or chemical cleaning agent. Allow the belts to dry naturally while
extended, preferably away from direct sunlight.
Door Seals

Wipe door seals with a damp cloth to remove any debris. Excessive debris on the door seals can cause damage when
contacting surrounding surfaces. Avoid using alcohol wipes or any chemical products that can potentially deteriorate the
coating on the door seals.
Front and Rear Touchscreens

Clean the touchscreen(s) using a soft lint-free cloth specifically designed to clean monitors and displays. Do not use cleaners
(such as a glass cleaner) or alcohol-based gel products (such as hand sanitizer) and do not use a wet wipe or a dry staticallycharged cloth (such as a recently washed microfiber). To wipe the front touchscreen without activating buttons and changing
settings, you can enable Screen Clean Mode. Touch Controls > Display > Screen Clean Mode. The display darkens to make it
easy to see dust and smudges. To exit Screen Clean Mode, press and hold HOLD TO EXIT.
Metal Surfaces

Polish, abrasive cleaners, alcohol-based gel products (such as hand sanitizer), and hard cloths can damage the finish on metal
surfaces.
Cautions for Interior Cleaning

CAUTION: Using solvents (including alcohol), alcohol-based gel products (such as hand sanitizer), bleach, citrus,
naphtha, or silicone-based products or additives on interior components can cause damage.
CAUTION: Statically-charged materials can cause damage to the touchscreen.

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WARNING: If you notice any damage on an airbag or seat belt, contact Tesla immediately.
WARNING: Do not allow any water, cleaners, or fabric to enter a seat belt mechanism.
WARNING: Do not use solvents or soap on interior accent lights.
WARNING: Exposure to chemical cleaners can be hazardous and can irritate eyes and skin. Read and observe the
instructions provided by the manufacturer of the chemical cleaner.
Using a Car Cover
To preserve the cosmetic appearance of the body when Cybertruck is not being used, use a genuine Tesla car cover. Car
covers can be purchased online from the Tesla Shop.

CAUTION: Use only a Tesla-approved car cover when Cybertruck is plugged in. Using a non-Tesla car cover can prevent
the Battery from being adequately cooled during charging.
Floor Mats
To extend the life of your carpet and make them easier to clean, use genuine Tesla floor mats available online at http://
www.tesla.com. Maintain floor mats by regularly cleaning them and checking that they are properly attached. Replace floor
mats if they become excessively worn.
WARNING: To avoid potential interference with a foot pedal, ensure that the driver’s floor mat is securely fastened, and
never place an additional floor mat on top of it. Floor mats should always rest on top of the vehicle carpeting surface and
not on another floor mat or other covering.

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Windshield Wiper Blades, Jets and Fluid
Topping Up Windshield Washer Fluid
The only reservoir into which you can add fluid is the windshield washer fluid reservoir, which is located behind the front trunk.
When the level is low, a message displays on the .
To top up the washer fluid:
1. Open the hood.
2. Clean around the filler cap before opening it to prevent dirt from entering the reservoir.
3. Open the filler cap.
4. While avoiding spilling, fill the reservoir until the fluid level is visible just below the filler neck.
5. Wipe up any spills immediately and wash the affected area with water.
6. Reinstall the filler cap.
CAUTION: Use only ethanol-based windshield washer fluid meant for automotive vehicles. Using other substances, such
as untreated water, can result in bacterial growth within the climate control system resulting in odor or potential damage
that is not covered by warranty.
NOTE: Some national or local regulations restrict the use of Volatile Organic Compounds (VOCs). VOCs are commonly used
as antifreeze in washer fluid. Use a washer fluid with limited VOC content only if it provides adequate freeze resistance for all
climates in which you drive Cybertruck.
CAUTION: Do not add formulated washer fluids that contain water repellent or bug wash. These fluids can cause
streaking, smearing, and squeaking or other noises.
WARNING: In temperatures below 40° F (4° C), use a washer fluid with antifreeze. In cold weather, using a washer fluid
without antifreeze can impair visibility through the windshield.
WARNING: Windshield washer fluid can irritate eyes and skin. Read and observe the instructions provided by the washer
fluid manufacturer.
Checking and Cleaning Wiper Blades
Periodically clean the edge of the wiper blades and check the rubber for cracks, splits, and roughness. If damaged, replace the
blade immediately to prevent damage to the glass and improve visibility.
Contaminants on the windshield, or on the wiper blades, can reduce the effectiveness of the wipers. Contaminants include
ice, wax spray from car washes, washer fluid with bug and/or water repellent, bird droppings, tree sap, and other organic
substances.
Follow these guidelines for cleaning:
• Clean the windshield and wiper blades using washer fluid, isopropyl (rubbing) alcohol, or non-abrasive glass cleaner
approved for use on automotive glass and rubber. Inappropriate products can cause damage or smears, and create glare on
the windshield.
• Lift the wiper arm a short distance away from the windshield, just far enough to access the wiper blade. Do not lift a wiper
arm beyond its intended position.
If the wipers remain ineffective after cleaning, replace the wiper blades.
Replacing Wiper Blades
For optimum performance, replace the wiper blades at least once a year. Replacement blades must meet the following criteria:
• The blade on the driver's side must be 26 inches (650 mm) long and long for the blade on the passenger's side.
• Ensure the connector on the replacement blade is the same as the original blade. Different connectors may prevent the
replacement blade from connecting to the wiper arm on the vehicle.
You can purchase replacement wiper blades on the Tesla Shop.
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NOTE: Only install replacement blades that are identical to the original blades. Using inappropriate blades can damage the
wiper system and windshield.
To replace the wiper blades:
1. Shift into Park and turn off the wipers.
2. Touch Controls > Service > Wiper Service Mode to move the wipers to the service position.
3. Lift the wiper arm a short distance away from the windshield, just far enough to access the wiper blade.
CAUTION: Wiper blades do not lock into a lifted position. Do not lift a wiper arm beyond its intended position.
4. Place a towel between the wiper arm and windshield to avoid scratching or cracking the windshield.
5. Hold the wiper arm and press the locking tab while sliding the blade down the arm.
6. Align the new wiper blade on the wiper arm and slide it toward the end of the wiper arm until it locks into place.
7. Turn Wiper Service Mode off to return the wipers to their normal position.
Cleaning Washer Jets
If a windshield washer jet becomes blocked, use a thin strand of wire to clear any blockages from the nozzles.

WARNING: Do not operate the washers while cleaning Cybertruck. Windshield washer fluid can irritate eyes and skin.
Read and observe the washer fluid manufacturer’s instructions.

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Jacking and Lifting
WARNING: Ensure the equipment you are using is rated for the weight of Cybertruck, including any cargo, installed
accessories, or upgrades before attempting to lift.
Follow the steps below to lift Cybertruck. Ensure that any non-Tesla repair facility is aware of these instructions, including lift
points and warnings.
Using a Jack and Jack Stand
1. Ensure Cybertruck is located in a flat, stable, and secure area with enough space surrounding the vehicle to jack it.
2. Ensure the vehicle ride height is set to Medium and enable Jack Mode (Controls > Service > Jack Mode see Jack Mode on
page 140) to disable self-leveling.
WARNING: You MUST enable Jack Mode, otherwise the vehicle may try to self-level while on the jack. Failing to
engage Jack Mode may cause serious injury or death.
3. If available, chock the wheel diagonal to the corner you're working on (for example, if you are replacing the rear driver's
side tire, chock the front passenger's side tire).
4. Remove the wheel cover from the wheel with the flat tire (see Removing and Installing Wheel Covers on page 432).
5. Use the lug nut wrench to break loose the lug nuts on the wheel.
6. Place the jack under the vehicle's lift point (shown in green) corresponding to the location you are working on.
WARNING: DO NOT position the jack under the Battery or side rails (shown in red).
Lift points:

7. Following the jack manufacturer's instructions, begin to lift the vehicle, making sure to constantly monitor the contact with
the lift point.
8. Place the jack stand under the appropriate jack stand location in the image corresponding to the area you're working on.
Ensure the jack stand is appropriately oriented and does not touch any of the red areas in the image. Adjust to meet the
jack's height. The vehicle should be able to be solely propped up with the jack stand.
WARNING: Do not get under the vehicle when it is propped up on the jack or jack stands. Doing so may cause serious
injury or death.
Jack stand points:

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9. Slowly lower the jack following manufacturer instructions, constantly monitoring the contact between the vehicle and the
jack stand. Then release the jack from the vehicle's lift point and check that it is secure.
10. To lower the vehicle off of the jack stand, use the jack to raise the vehicle until the jack stand is no longer supporting the
vehicle, remove the jack stand, and slowly lower the vehicle down.
11. Disengage Jack Mode by touching Controls > Service > Jack Mode.
Using a 2-Post Lift:
1. Ensure the vehicle ride height is set to Medium and enable Jack Mode (Controls > Service > Jack Mode see Jack Mode on
page 140) to disable self-leveling.
WARNING: You MUST enable Jack Mode, otherwise the vehicle may try to self-level while on the jack. Failing to
engage Jack Mode may cause serious injury or death.
2. Position the lift arm pads under the lift points at the locations shown.
WARNING: DO NOT position the lift arm pads under the Battery or side rails.
Lift points:

3. Lift the vehicle to working height.
4. Engage any lift safety locks. Follow the lift manufacturer's instructions for details.
WARNING: Failure to correctly engage the safety locks can result in serious injury or death.
5. When done, lower the vehicle down slowly and safely.
6. Disengage Jack Mode by touching Controls > Service > Jack Mode.
WARNING: Never raise Cybertruck when the charge cable is connected, even if charging is not in progress.
WARNING: Do not work on an incorrectly supported vehicle. Doing so can cause serious damage, bodily injury, or death.
CAUTION: It is your responsibility to be observant of the vehicle and it's surroundings. Ensure the area is clear when
lifting and lowering Cybertruck and that the doors, front trunk, and tailgate are closed as necessary to avoid damage.
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CAUTION: DO NOT lift from under the Battery or side rails. Place the lift arm pads under the designated body lift points
only. The locations shown are the only approved lifting points for Cybertruck. Lifting at any other points can cause
damage. Damage caused by incorrectly lifting Cybertruck is not covered by the warranty.
Jack Mode
WARNING: Failure to enable Jack Mode can result in the vehicle self-leveling, resulting in damage, injury, or death.
Cybertruck automatically self-levels, even when the vehicle is "asleep" and the touchscreen is powered off. Before enabling
Jack Mode:
1. Set the ride height to Medium to allow for enough ground clearance for the jack.
NOTE: Due to the large wheels and height of Cybertruck, setting the ride height to High or Very High may not provide
sufficient clearance for you to safely change the tire.
2. Enable Jack Mode (Controls > Service > Jack Mode).
3. To deactivate Jack Mode, press the brake pedal and touch Controls > Service > Jack Mode again. Jack Mode automatically
cancels when you start to drive.
NOTE: Jack mode may be unexpectedly enabled in situations where an object is supporting the vehicle's weight (for example
the bumper of the vehicle is resting on a curb).

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Parts and Accessories
Parts, Accessories, and Modifications
Use only genuine Tesla parts and accessories. Tesla performs rigorous testing on parts to ensure their suitability, safety, and
reliability. Purchase these parts from Tesla, where they are professionally installed and where you can receive expert advice
about modifications to Cybertruck. Accessories are available for purchase from Tesla stores or online at www.tesla.com.
NOTE: Adding accessories to your vehicle may impact expected range, vehicle dimensions, etc.
NOTE: Some accessories may not be available in your market region.
Tesla is unable to assess parts manufactured by other distributors and therefore accepts no responsibility if you use non-Tesla
parts on Cybertruck.
WARNING: Installing non-approved parts and accessories, or performing non-approved modifications, can affect the
performance of Cybertruck and the safety of its occupants. Any damage caused by using or installing non-approved
parts, or by performing non-approved modifications, is not covered by the warranty.
WARNING: Tesla does not accept liability for death, personal injury or damage that occurs if you use or install nonapproved accessories or make non-approved modifications.
Body Repairs
If your Cybertruck is in a collision, contact Tesla or a Tesla-approved Body Shop to ensure that it is repaired with genuine Tesla
parts. Tesla has selected and approved body shops that meet strict requirements for training, equipment, quality, and
customer satisfaction.
Some repair shops and insurance companies might suggest using non-original equipment or salvaged parts to save money.
However, these parts do not meet Tesla's high standards for quality, fit and corrosion resistance. In addition, non-original
equipment and salvaged parts (and any damage or failures they might cause) are not covered by the warranty.
Using RFID Transponders
When attaching an RFID transponder (used by many automated toll systems) inside Cybertruck, place the transponder . This
ensures best results and minimizes any obstruction to your driving view. Refer to the RFID manufacturer's instructions for
specific placement.
NOTE: You can also attach a weather-proof transponder to the front license plate or behind the nose cone (for details on how
to remove the nose cone, see #unique_431 on page ).

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Do It Yourself Maintenance
Learn how to perform simple Do It Yourself procedures, such as replacing the wiper blade and HEPA filter. Go to https://
www.tesla.com/support/do-it-yourself-guides for instructions, animations, and videos of these procedures.
NOTE: Due to market region or vehicle configuration specifics, some parts and procedures may not be available for your
vehicle. When navigating to https://www.tesla.com/support/do-it-yourself-guides, select your vehicle, region, and/or
language to see an updated list of parts and accessories available for your region.
CAUTION: Perform each procedure in a dry and well-lit area. For your safety, only perform a procedure if you feel
comfortable doing so, and always follow provided instructions.

Specifications

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Vehicle Loading
Tire and Loading Information Label
• The maximum number of occupant seating positions.
• The maximum vehicle capacity weight.
• The size of the original tires.
• The cold inflation pressures for the original front and rear tires. These pressures are recommended to optimize ride and
handling characteristics.
Label Format:

Never change this label, even if you use different tires in the future.
NOTE: If Cybertruck is loaded to its full capacity, double check all tires to ensure they are inflated to their recommended
pressure levels.
Vehicle Certification Label
The Vehicle Certification label provides:
• GVWR - Gross Vehicle Weight Rating. The maximum allowable total mass of Cybertruck. This is calculated as the weight of
Cybertruck equipped with the heaviest factory selectable options, all passengers, fluids, and cargo.
• GAWR FRT and GAWR RR - Gross Axle Weight Rating for the front and rear axles. The GAWR is the maximum distributed
weight that each axle can support.

CAUTION: To prevent damage, never load Cybertruck so that it is heavier than GVWR or exceeds the individual GAWR
weights.

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Calculating Load Limits
1. Locate the statement “The combined weight of occupants and cargo should never exceed XXX lbs or XXX kg” on the “Tire
and Loading Information” label.
2. Determine the combined weight of all occupants that will ride in the vehicle.
3. Subtract the combined weight of the occupants from XXX lbs or XXX kg (see Step 1).
4. The resulting figure equals the available cargo load capacity. For example, if the “XXX” amount equals 1400 lbs (635 kg)
and there will be five 150 lb (68 kg) passengers in the vehicle, the amount of available cargo capacity is 650 lbs (1400 ‑ 750
(5 x 150) = 650 lbs) or 295 kg (635 ‑ 340 (5 x 68) = 295 kg).
5. Determine the combined cargo weight being loaded on the vehicle. That weight must not exceed the available cargo load
capacity calculated in Step 4.
WARNING: Trunks are the preferred places to carry objects. In a collision, or during hard braking and sharp turns, loose
items in the cabin could injure occupants.
Example Load Limit Calculations

How much cargo Cybertruck can carry depends on the number and weight of passengers. The following calculated load limit
examples assume passengers weigh 150 lbs (68 kg). If passengers weigh more or less, available cargo weight decreases or
increases respectively.
Driver and one passenger
Description

Total

Vehicle capacity weight

954 lbs (433 kg)

Subtract occupant weight (2 x 150 lbs/68 kg)

300 lbs (136 kg)

Available cargo weight

654 lbs (297 kg)

Driver and four passengers
Description

Total

Vehicle capacity weight

954 lbs (433 kg)

Subtract occupant weight (5 x 150 lbs/68 kg)

750 lbs (340 kg)

Available cargo weight

204 lbs (93 kg)

When carrying cargo, distribute the weight as evenly as possible between the front and rear trunks. For maximum load limits
specific to the trunks, see Front Trunk Load Limit on page 12 and Rear Trunk Load Limits on page 11.

Subsystems
Transmission

Steering

Brakes

Suspension

Battery - Low Voltage

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Battery - High Voltage

Wheels and Tires
Wheel Specifications (Factory)
Lug Nut Torque

129 lb. ft (175 Nm)

Lug Nut Socket Size

21 mm

NOTE: For instructions on how to jack/lift Cybertruck, see Jacking and Lifting on page 138.
Tire Specifications (Factory)

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Understanding Tire Markings
Laws require tire manufacturers to place standardized information on the sidewall of all tires. This information identifies and
describes the fundamental characteristics of the tire. It also provides the tire identification number (TIN) for certification of
safety standards, and in case of a recall.
NOTE: You can identify a Tesla-approved tire by the "T-mark" specification on the tire's sidewall (for example, T0, T1,
T2).Tesla-approved tires are designed to work with your vehicle and optimize performance, safety, reliability, and durability.
For more information about Tesla-approved replacement tires, refer to the .
1. Tire category: P indicates that the tire is for passenger vehicles.
2. Tire width: This 3-digit number is the width (in millimeters) of the tire from sidewall edge to sidewall edge.
3. Aspect ratio: This 2-digit number is the sidewall height as a percentage of the tread width. So, if the tread width is 205 mm,
and the aspect ratio is 50, the sidewall height is 102 mm.
4. Tire construction: R indicates that the tire is of Radial ply construction.
5. Wheel diameter: This 2-digit number is the diameter of the wheel rim in inches.
6. Load index: This 2 or 3-digit number is the weight each tire can support. This number is not always shown.
7. Speed rating: When stated, indicates the maximum speed (in mph) at which the tire can be used for extended periods.
Q=99 mph (160 km/h), R=106 mph (170 km/h), S=112 mph (180 km/h), T=118 mph (190 km/h), U=124 mph (200 km/h),
H=130 mph (210 km/h), V=149 mph (240 km/h), W=168 mph (270 km/h), Y=186 mph (300 km/h), (Y)=vehicle's top speed
(exceeds the "Y" rating).
8. Tire composition and materials: The number of plies in both the tread area and the sidewall area indicates how many layers
of rubber coated material make up the structure of the tire. Information is also provided on the type of materials used.
9. Maximum tire load: The maximum load which can be carried by the tire.
10. Maximum permissible inflation pressure: This pressure should not be used for normal driving.
11. U.S. DOT Tire Identification Number (TIN): Begins with the letters DOT and indicates that the tire meets all federal
standards. The next 2 digits/letters represent the plant code where it was manufactured, and the last 4 digits represent the
week and year of manufacture. For example, the number 1712 is used to represent the 17th week of 2012. The other
numbers are marketing codes used at the manufacturer’s discretion. This information can be used to contact consumers if
a tire defect requires a recall.
12. Treadwear grade: This number indicates the tire’s wear rate. The higher the treadwear number is, the longer it should take
for the tread to wear down. A tire rated at 400, for example, lasts twice as long as a tire rated at 200.
13. Traction grade: Indicates a tire’s ability to stop on wet roads. A higher graded tire should allow you to stop your vehicle in a
shorter distance than a tire with a lower grade. Traction is graded from highest to lowest as AA, A, B, and C.
14. Temperature grade: The tire’s resistance to heat is grade A, B, or C, with A indicating the greatest resistance. This grading
is provided for a correctly inflated tire, which is being used within its speed and loading limits.

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Uniform Tire Quality Grading

The following information relates to the tire grading system developed by the National Highway Traffic Safety Administration
(NHTSA), which grades tires by tread wear, traction and temperature performance. Tires that have deep tread, and winter
tires, are exempt from these marking requirements.
Where applicable, quality grades are found on the tire’s sidewall between the tread shoulder and maximum section width. For
example:
• TREADWEAR 180
• TRACTION AA
• TEMPERATURE A
The quality grades are described next.
NOTE: In addition to the marking requirements, passenger car tires must conform to Federal Safety Requirements.
Treadwear

The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a
specified government test course.
For example, a tire graded 150 wears one and a half times better on a government test course than a tire graded 100. The
relative performance of tires depends on the actual conditions of their use, however, and can depart significantly from the
norm due to variations in driving habits, service practices, road characteristics, and climate.
Traction

The traction grades, from highest to lowest, are: AA, A, B, and C. These grades represent a tire’s ability to stop on wet
pavement as measured under controlled conditions on test surfaces of asphalt and concrete. A tire marked C might have poor
traction performance.
WARNING: Defective tires are dangerous. Do not drive if a tire is damaged, excessively worn, or is inflated to an
incorrect pressure. The safety of the vehicle and occupants can be adversely affected. Check tires regularly for wear
and to ensure there are no cuts, bulges or exposure of the ply/cord structure.
WARNING: The traction grade assigned to the tire is based on straight-ahead braking tests, and does not include:
acceleration, cornering, hydroplaning or peak traction characteristics.
Temperature

The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability
to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high
temperature can cause the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure.
The grade C corresponds to the minimum level of performance that all passenger car tires must meet under the Federal Motor
Safety Standard No. 109. Grades B and A represent levels of performance on the laboratory test wheel that exceed the
minimum requirements.
WARNING: A tire’s temperature grade is established for a tire that is properly inflated and not overloaded. Excessive
speed, under-inflation, or excessive loading, either separately or in combination, can cause heat buildup and possible
tire failure.
Tire and Loading Glossaries
General Wheel and Tire Terms

Accessory Weight

The combined weight (in excess of those items replaced) of items available as factory installed
equipment.

Bead

The inner edge of a tire that is shaped to fit to the rim and form an air tight seal. The bead is
constructed of steel wires which are wrapped, or reinforced, by the ply cords.

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Cold Tire Pressure

The air pressure in a tire that has been standing in excess of three hours, or driven for less than
one mile.

Curb Weight

The weight of a standard vehicle, including any optional equipment fitted, and with the correct
fluid levels.

Gross Vehicle Weight

The maximum permissible weight of a vehicle with driver, passengers, load, luggage, and
equipment.

kPa (kilo pascal)

A metric unit used to measure pressure. One kilo pascal equals approximately 0.145 psi.

Maximum Inflation
Pressure

The maximum pressure to which the tire should be inflated. This pressure is given on the tire side
wall in psi (lbf/in2).
CAUTION: This pressure marked on the tire is the maximum allowed by the tire
manufacturer. It is not the pressure Tesla recommends using for Cybertruck.

Maximum Loaded
Vehicle Weight

The sum of curb weight, accessory weight, vehicle capacity weight, and production options
weight.

Production Options
Weight

The combined weight of options installed which weigh in excess of 3 lb (1.4 kg) more than the
standard items that they replaced, and are not already considered in curb or accessory weights.

PSI (lbf/in2)

Pounds per square inch (the unit used to measure tire pressure).

Recommended Tire
Inflation Pressure

Tire inflation pressure, established by Tesla, which is based on the type of tires that are mounted
on the vehicle at the factory. This information can be found on the Tire and Loading Information
label located on the door pillar.

Rim

The metal support for a tire, or tire and tube, upon which the tire beads are seated.

Vehicle Capacity Weight The number of seats multiplied by 150 lbs (68 kg) plus the rated amount of load/luggage.
Load Carrying Definitions

Normal occupant weight

68 kilograms (150 lbs) times the number of occupants specified in the second column of the
tables for calculating load limits (see the Vehicle Loading topic of this Owner's Manual).

Occupant distribution

Distribution of occupants in a vehicle.

Passenger car tire

(P or Hard Metric) A tire intended for use on passenger cars, multipurpose passenger
vehicles, and trucks.

Light truck tire

(LT) A tire for use where additional load carrying capability is needed.

Rim diameter

Nominal diameter of the bead seat.

Rim size designation

Rim diameter and width.

Rim type designation

The manufacturing industry's designation for a rim by style or code.

Rim width

Nominal distance between the rim's flanges.

Vehicle maximum load on the Load on an individual tire that is determined by distributing to each axle its share of the
tire
maximum loaded vehicle weight and dividing by two.
Vehicle normal load on the
tire

Load on an individual tire that is determined by distributing to each axle its share of the curb
weight, accessory weight, and normal occupant weight and dividing by two.

Pneumatic Radial Tire Definitions

Bead separation

A breakdown of the bond between components in the bead.

Bias ply tire

A pneumatic tire in which the ply cords that extend to the beads are laid at alternate angles
substantially less than 90 degrees to the center line of the tread.

Carcass

The tire structure, except tread and sidewall rubber which, that when inflated, bears the load.

Chunking

The breaking away of pieces of the tread or sidewall.

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