928 S V8-4957cc 5.0L (1985)
Aluminum wheel nuts
Aluminum wheel nuts require special care.
Before installing:
-
lubricate threads and shoulders of aluminum nuts with Optimoly HT, Part No. 999.917.728.00 (Optimoly HT does not affect tightening torque)
-
torque nuts to 130 N-m (96 ft lb)
Note
Tighten and loosen aluminum nuts with a socket that grabs the entire depth of nut.
CAUTION
Other socket wrenches or wheel wrenches are not approved.
Never use impact tools.
Break-in time for new tires
New tires have a vulcanization skin that can cause poor vehicle handling. Handling characteristics improve measurable during the tire break-in period
of 600 miles (1000 km).
Vehicle handling characteristics should not be evaluated immediately after tire replacement.
Driving conservatively during the first 600 miles (1000 km) will help to maximize tire life.
After the break-in period, check wheel balance.
Obtain even tire wear by rotating tires after 3000 miles (5000 km).
Tire pressures
Measure tire pressure only when tires are cold. Air pressure increases as tires get hotter and must not be decreased.
928 (Standard) 928 (Optional) 928 S (Standard) 215/60 VR 15 225/50 VR 16 225/50 VR 16
Front 2 5 bar (36 psi) 2.5 bar (36 psi) 2 5 bar (36 psi)
Rear
3 0 bar (44 psi) 2.5 bar (36 psi) 3 0 bar (44 psi)
Collapsible spare wheel:
2.2 bar (32 psi)
Note