2003-04 Mach 1 Registry Owners Club - View Single Post

340.29_m/s · 04-06-2007, 10:52 AM

How about if I have 265/35/18 up front and 285/35/18 in the rear. Which one is the one that'll effect the speedo. I get 1.5% to fast with the 265 and 0.7% too slow with the 285. Do I just subtract on from the other. If that's the case 0.8% isn't too far off from factory wheels.

04-06-2007, 10:52 AM	#8
340.29_m/s Registered User Join Date: Dec 2006 Location: Toronto Posts: 42	Re: Site for tire sizes and spedometers How about if I have 265/35/18 up front and 285/35/18 in the rear. Which one is the one that'll effect the speedo. I get 1.5% to fast with the 265 and 0.7% too slow with the 285. Do I just subtract on from the other. If that's the case 0.8% isn't too far off from factory wheels.