tberry

for example for a 17x7, 17x8, 17x8.5 how do you know what size tire should go on (ie 205, 215, 225, 235, etc..) Any general rule of thumb would be great. thanks.<ul><li><a href="http://webkyaw.freehosting.net">My A4 page</a></li></ul>

RVTS4

Re: go to tirerack.com and follow the steps to the size tire for which rim...its easy

big ben

I have 235/45 and they don't rub, I would do 235 40 though

tberry

Re: I did that and at every size tirerack says 225/45....cant be right

paul_858

a 225 width will fit on wheels 7-8.5" in diameter safely. They're just recommendign stock size

tberry

Re: i thought 225 is width of tire, and 45 is "thickness" from rim of wheel to contact surface

paul_858

it is, 225 is the width, 45 is the height of the sidewall equivalent to the % of the width.

SAvant

<ul><li><a href="http://www.miata.net/garage/tirecalc.html">http://www.miata.net/garage/tirecalc.html</a</li></ul>