NHTSA ID Number: 10133094
Manufacturer Communication Number: 04-03-10-013H
TSB/Document Date: 2018-04-16
Summary
This preliminary bulletin provides information on Radio Favorites Disappear, HD Audio Concerns Favorites Disappear, HD Audio.
Bulletin No.: 04-03-10-013H
Date: Dec-2013
Subject:
Driving Characteristics of Rear-Wheel Drive Vehicles and Available Winter Tires
Models:
2012-2014 Buick
Regal GS
2005-2011 Cadillac STS
2008-2014 Cadillac CTS Sedan
2009-2014 Cadillac CTS-V
2010-2014 Cadillac CTS Wagon
2011-2014 Cadillac CTS Coupe
2013-2014 Cadillac ATS
2010-2014 Chevrolet Camaro
2012-2014 Chevrolet Camaro ZL1
2014 Chevrolet Corvette, Corvette Z51
2014 Chevrolet SS
2008-2009 Pontiac G8
This bulletin has been revised to add new models and to update the Available Winter Tires table for 2014. Some vehicles
have the same recommended tires as the last revision of this document, but have revised part numbers. Please discard
Corporate Bulletin Number 04-03-10-013G.
Increasing Winter Traction
Many General Motors high performance models come factory equipped with tires that are optimized for maximum dry and wet road performance while still
retaining satisfactory tread life, excellent durability and low noise levels. In severe winter climates where snowfall may be significant, these tires may be found to
provide less traction. Winter tires are a viable alternative that may greatly enhance winter driving.
Recent General Motors performance oriented vehicles being introduced are rear wheel drive. Rear wheel drive takes advantage of the natural weight shift
rearward during acceleration increasing dry road traction on the driven wheels. Rear wheel drive also contributes to neutral steering as it takes the burden off
the front wheels to both power and turn the vehicle. The connection between the steering and the powertrain is also eliminated, removing any tendency for
engine power to influence the steering under heavy acceleration or rough roads.
Generally front wheel drive vehicles offer additional winter traction due to the weight of the engine / transaxle sitting directly above the driving wheels, and are
found to be satisfactory for winter driving when factory equipped with all-season tires. In the case of the Regal GS, this model is offered with All-Season or
Summer (3 season) performance tires that optimize dry and wet handling. Winter Tires may greatly enhance the available traction on this vehicle if originally
equipped with “Summer” tires. (The Regal GS is also available in AWD both with Summer or All-Season Tires. Summer tire equipped models will perform better
in the snow with Winter Tires)
Use and Application Tips
The vehicles listed in this bulletin are rear-wheel drive with the exception of the Buick Regal GS, which is front wheel drive. In ALL cases, if a decision is made
to switch to winter tires, you MUST replace all four tires. When selecting winter tires, you should keep to the same size and aspect ratio as the original
equipment tires, unless otherwise directed by the chart below. If you deviate from the original size, you may create clearance issues, speedometer error and/or
alter the handling characteristics of the vehicle. These factors have been considered in the recommendations below. No other variance in size should be
considered.
1
Acknowledge Any Revised Speed Ratings and Adjust Your Driving Accordingly
Winter tires, in general, are optimized for increased traction on snow and ice. In some instances, this may translate into decreased dry road traction, increased
road noise and shorter tread life. You should drive cautiously after switching tires and get acclimated to the new handling and braking performance
characteristics. If winter tires are not available in the same speed rating as the original equipment tires, you must be sure not to exceed the speed rating of the
winter tire chosen.
Some Available Choices
The tires listed in the chart below are some of the choices in winter tires currently available in sizes that match the OE tire. Due to seasonal model changes and
constantly changing availability, all of the tires listed below are not guaranteed to be in stock. We believe these sources and their equipment to be reliable. There
may be additional manufacturers of such products. General Motors does not endorse, indicate any preference for or assume any responsibility for the products
or equipment from these firms or for any such items which may be available from other sources. A product's inclusion in the chart below does not imply any
guaranteed level of performance. Purchase of any of the tires below is at the customer's cost and any and all warranties expressed are the sole responsibility of
the tire manufacturer.
Parts Information
The following tires are available for order through the GM Tire Program. Some tires may specify revised load ratings and/or recommended pressures.
Important: Please note that in all cases, winter tires are designed to be used as a set of 4 tires. Do Not install winter tires only on the driving wheels.
Available Winter Tires
Model
Year
Vehicle
O.E. Rim
Position
(Fr/Rr)
O.E. Tire
Size
Winter Tire
Size
Speed
Rating
Winter Rim
(If
Required)
Winter Tire
Brand/Pattern
GM P/N
2013–14
ATS
SEDAN
17 x 8.0
ALL
P225/45R1
7 90H/V
225/45R17
V
17 x 8.0
Bridgestone
Blizzak LM-25
RFT
19250234
18 x 8.0
ALL
2
92V
225/40R18
H
18 x 8.0
Bridgestone
Blizzak LM60RFT
19250224
18 x 8.5
Fr
225/40RF1
8 88W
225/40R18
V
18 x 8.0
Pirelli W240
Sottozero S2
RunFlat
19241089
18 x 9.5
Rr
255/35RF1
8 90W
255/35RF1
8
V
18 x 9.0
Pirelli W240
Sottozero S2
RunFlat
19249704
19 x 9.0
Fr
255/40ZR1
9 96Y
255/40R19
XL
V
19 x 9.0
Pirelli W240
Sottozero
19164570
19 x 9.5
Rr
285/35ZR1
9 99Y
285/35R19
XL
V
19 x 9.5
Pirelli W240
Sottozero
19160922
18 x 8.5
Fr
P235/50R1
8 97V
235/50R18
97V
V
18 x 8.5
Dunlop SP
Winter Sport
4D
19298018
18 x 9.0
Rr
P265/45R1
8 101V
255/45R18
V
18 x 9.0
Dunlop SP
Winter Sport
3D
19254193
19 x 8.5
Fr
P245/45ZR
19 98Y
245/45R19
XL
V
19 x 8.5
Pirelli W240
Sottozero S2
19249698
20092014
20112014
CTS-V
CTS
COUPE
2
19 x 9.5
Rr
P275/40ZR
19 101Y
275/40R19
XL
V
19 x 9.5
Pirelli W240
Sottozero S2
19249709
20102013
CTS
SEDAN &
WAGON
19 x 8.5
ALL
245/45ZR1
9 98Y
245/45R19
XL
V
19 x 8.5
Pirelli W240
Sottozero S2
19249698
20082013
CTS
SEDAN
17 x 8.0
ALL
P235/55R1
7 98H
235/55R17
H
17 x 8.0
Michelin X-ICE
19295495
18 x 8.5
ALL
P235/50R1
8 97V
235/50R18
97V
V
18 x 8.5
Dunlop SP
Winter Sport
4D
19298018
235/50ZR1
8 97Y
235/50R18
97V
V
18 x 8.5
Dunlop SP
Winter Sport
4D
19298018
2014
20052011
20102014
CTS
SEDAN
STS
CAMARO
17 x 8.5
ALL
P245/45R1
7 95V
245/45R17
V
17 x 8.5
Pirelli W240
Sottozero
Runflat
19191065
18 x 8.5
ALL
P245/40R1
8 93V
245/40R18
V
18 x 8.5
Pirelli W240
Sottozero
Runflat
19254193
18 x 8.5
Fr
P245/40R1
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TSB/Document ID: 04-03-10-013H
Replacement Service Bulletin Number:
MFR Communication Date: 2013-12-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
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