Dimensions for 944 hub machining

[wrljet]

I'm a hobbyist machinist and 0.01mm is accuracy I can only read about, not something I achieve. ;-)

FWIW, I just looked up the Porsche specs for runout in the 996 Workshop Manual.

Lateral runout of the brake disc, max. - 0.03 mm
Lateral runout of the wheel hub, max. - 0.03 mm
Lateral runout of the brake disc when installed, max. - 0.06 mm

Maximum permissible radial runout and lateral runout of the light
alloy wheels = 0.7 mm.

Bill

[Chris Percival]

Yeah, I think I remember us reading up on the Porsche specs and feeling chuffed with ourselves that we came in within them..

[wrljet]

Also, the Porsche specs (996) are set for the car going 175 MPH.

I just checked a recent Chrysler book and they spec 0.08mm lateral at the hub.
That's almost 3 times what Porsche wants. And 0.13mm at the rotor.

Bill