1.Quick Reference
Axle/Brakes/Wheels
Item
Axle shaft runout
Brake disk thickness (front)
Brake disk thickness (rear)
Brake disk runout
Brake master cylinder I.D.
Brake master cylinder piston O.D.
Front brake caliper piston O.D.
Front brake caliper cylinder I.D.
Item
Wheel rim runout service limit
Rear brake disk thickness
Rear brake disk runout
Rear brake caliper piston O.D.
Rear brake caliper cylinder I.D.
Standard mm (in)
—
3.8 - 4.2
(0.15 - 0.165)
5.0
(0.2)
—
12.7 - 12.74
(0.508 - 0.5096)
12.65 - 12.68
(0.506 - 0.5072)
26.93 - 26.96
(1.0602 - 1.0614)
27 - 27.05
(1.063 - 1.065)
Standard (mm)
25.33 - 25.36
25.40 - 25.45
1-17
Downtown 350i
Service Limit
0.2 mm
(0.008 in)
0.3 mm
(0.012 in)
—
0.4 mm
—
—
—
—
max 5
5.0
max 0.4