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Old 01-11-2013, 12:44 PM   #1416
ANR62NV
Scooby Specialist
 
Member#: 283589
Join Date: May 2011
Chapter/Region: SCIC
Vehicle:
2011 Impreza WRX
Red

Default

Quote:
Originally Posted by J_Maher_WRX View Post

Speedo will be off.... Tire/wheel diameter will be 24.7".. Stock is 25.3"... Therefore the gearing is made shorter.

Specification Sidewall Radius Diameter
245/40-17 3.9in 12.4in 24.7in

245/35-18 3.4in 12.4in 24.8in

Circumference Revs/Mile Difference
77.6in 816 0.0%
77.8in 815 0.1%


It's not significant .....
Gearing doesn't change either
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