need advice

[hotscrub]

i have a stock 73 240z. i have a chance to buy CHEAP a set of universal fit 17"s rims that have 224/40 tires on them. would these fit and if not , could i go lower say 215/40 or 205/40. how would i be able to tell?

[70 Cam Guy]

We need to know the width and offset of the 17s to be able to give you an answer. By universal, you mean 4x100 and 4x114.3 right? It's not a 5-lug universal right?

The original diameter of our tires are ~25". If you keep the overall diameter between 24 and 25", your speedometer will stay close to accurate. A 215/45 or 225/40 would get you close but 225/40 is not a common size. A 225/45 will be close as well and that is a common size tire. If it is 225/50/17, that is probably too tall at nearly 26 inches. I suggest playing around on tirerack with different tire sizes and checking specs.

[hotscrub]

i don"t know width or offset. i found the sle on craigslist. they are four lugs. thanks for the advice, i think i'll go take a look at them. they are only 200 bucks.

[Zedyone_kenobi]

you get what you pay for..

end thread.

[tlorber]

Here is a tire size calculator. I believe the original size was 195 70 14 (someone here will correct if I'm wrong). This calculator will show you how to get to the same diameter/circumfrence. This will NOT account for width or offset.

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

Edited October 6, 2010 by tlorber