View Single Post
      12-03-2012, 01:43 PM   #5
xDrive35i
Lieutenant Colonel
xDrive35i's Avatar
United_States
122
Rep
1,781
Posts

Drives: Porsche Macan S
Join Date: Feb 2011
Location: Chicago

iTrader: (0)

European cars tend to exaggerate speed slightly. Up until the moment you learned that, you thought you were an undefeated speed demon.

Tire pressures and rim size have a negligible effect on speedo readout. The engineers build this cushion in so that even if there are variables out of your control, there's no way you can sue the company for an inaccurate speedometer.

Make sure when swapping for winter that you buy rims and tires with a total rolling radius equal to factory spec.
Appreciate 0