[s-cars] re: Spedo Difference between 225/45 and 235/45

[David Giannandrea]

> >
> >If a car is supposed to run 225/45/17s and you put on
> >235/45/17s, what would be the resulting spedo
> >difference (say, at 60mph)?

Use link below to calculate tire size effects. Your car doing
60mph would indicate 59.1, hardly noticible, more like the
situation you would encounter when your tires are worn down.

Site below indicates you would have a -1.4% speedometer error.

http://www.miata.net/garage/tirecalc.html

David