Audi Q3: Acceptable Tread Depth Variance
Model with Longitudinally Installed Engine
Tread variance for models with a longitudinally installed
engine, such as A4, A5, A6, A7, A8, Q5, Q7, ...
The variance between the front and rear axle in this case
may not be more then 2 mm
Note
The technical background of the limitations are thermal
pressure for the transmission oil due to a large difference in
the rolling circumference of the tires.
- For all four wheels use only tires of the same construction
type and tread.
- Always use tires with the deepest tread depth on the front
axle.
- It is possible to change tires individually. However, Audi
recommends changing tires on both sides.
- With sport differential on the rear axle, Audi recommends
always replacing the tires on both sides of the rear axle.

Models with Transverse Installed Engine
Note
- Tread depth variance for models with crossways installed
engine, such as A3, TT, Q3, A1, ...
- The variance between the front and rear axle in this case
may not be more then 3 mm
Note
The technical background of the limitations are thermal
pressure for the transmission oil due to a large difference in
the rolling circumference of the tires.
- For all four wheels use only tires of the same construction
type and tread.
- Always use tires with the deepest tread depth on the front
axle.
- It is possible to change tires individually. However, Audi
recommends changing tires on both sides.
- With sport differential on the rear axle, Audi recommends
always replacing the tires on both sides of the rear axle.

Recommended Snow Chains
Recommended Snow Chains - RUD
Recommended Snow Chains - RUD - 14 Inches

Recommended Snow Chains - RUD - 15 Inches

1) and Avant RS 4 (Type 8E)
Recommended Snow Chains - RUD - 16 Inches

1) and Avant RS 2
Recommended Snow Chains - RUD - 17 Inches

Recommended Snow Chains - RUD - 18 Inches

1) and A4 (Type 8K and 8T)
Recommended Snow Chains - RUD - 19 Inches

1) R8 rear axle
2) and RS 4 (type 8E)
Recommended Snow Chains - RUD - 20 Inches

1) Q7 12-cylinder rear axle
Recommended Snow Chains - König (King)
Recommended Snow Chains - König (King) - 14 Inches

Recommended Snow Chains - König (King) - 15 Inches

Recommended Snow Chains - König (King) - 16 Inches

Recommended Snow Chains - König (King) - 17 Inches

Recommended Snow Chains - König (King) - 18 Inches

Recommended Snow Chains - König (King) - 19 Inches

READ NEXT:
On some vehicles with certain wheel/tire combinations, wheel
housing enlargements (FLAPS) must be attached on the fenders or
bumper for technical reasons -arrows-.
Please check whether FLAPS must
Wheel Bolt Types
Note
Make sure the correct wheel bolts are installed. Refer to
the Parts Catalog.
Standard, One-Piece Wheel Bolt
Two-piece wheel bolt, short turnable spherical calott
SEE MORE:
Connectors, Disconnecting and Connecting at Connector Station
Connector assignment. Refer to
→ Wiring diagrams, Troubleshooting & Component locations.
Note
The connector station is located in the vehicle floor sill
panel under the front seat area.
Special tools and worksh
Component Location Overview - Control Modules
Component Location Overview - Control Modules
1 - Vehicle Electrical System Control Module -J519-
Removing and installing. Refer to
→ Chapter "Vehicle Electrical System Control Module -J519-, Removing and
Installing".
2&nb