alright, so im trying to get someone to buy my tires, the reason they dont want to is because they are one size sidewall different. his are 60, and these are 55.
my question is: will going down one size sidewall affect the speedo or odometer?

THanx in advance to anyone who can clear this up for me

 

it will only affect it a small amount. if you were going from a 16" rim to a 19" rim there would be a noticeable in your speedometer vs your actual speed. going from 60 to 55 sidewall you might be off 1/4 of a MHP but its not going to do much. there are calculators online that show you exactly how much you would be off by. i wouldnt worry about it.

 

thanks