General Specifications For Race Track Use (911 GTS/Turbo And 911 GT3)

Always check the central wheel lock before using the vehicle for intensive driving on the race track. → 440702 CHECKING CENTRAL LOCK ON WHEELS .
Checking includes the following checks (list):
- Remove wheel bolts and remove wheels. → 440519 REMOVING AND INSTALLING WHEEL WITH CENTRAL BOLT .
- Check components of the central wheel bolts (wheel bolts, wheel contact surfaces (wheel and wheel hub), check that wheel driver pins are fitted securely, lockable wheel bolt).
- Grease conical surface of the central bolt with a very light coating of Optimoly TA (aluminum grease) before fitting each wheel.
- Also grease thread in the wheel hub with a little Optimoly TA (aluminum grease).
- Re-fit wheels according to instructions. Tighten central wheel bolts to the specified tightening torque of 600 Nm (444 ftlb.) (using 3-step tightening procedure) and check that the locking pin has engaged correctly in the central bolt. For details, see → 440519 REMOVING AND INSTALLING WHEEL WITH CENTRAL BOLT .
Always complete the following steps after driving the vehicle on a race track:
- Tighten threaded connection securing drive shaft to wheel hub (M22 x 1.5) to the specified tightening torque of 460 Nm (340 ftlb.) .
- Check all central wheel lock components for signs of wear and replace them if necessary. → Central wheel lock: component assessment .