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Joel-Box-ster · 06-26-2012, 08:58 AM

According to Magellan GPS my speedometer reads 2MPH over the actual speed which is slower in real world. Changing into bigger diameter tires can also affect your speed reading.

06-26-2012, 08:58 AM	#14
Joel-Box-ster Registered User Join Date: Apr 2012 Location: Nor.Cal Posts: 131	According to Magellan GPS my speedometer reads 2MPH over the actual speed which is slower in real world. Changing into bigger diameter tires can also affect your speed reading. __________________ 2K Boxster White/Grey Int./Hardtop/TIP