Guys i just bought 18 inch rims and want to get tires for it i was wondering 225/40/18 front and 255/35/18 or should i go 255/45/18 on the rear what do you guys think

 

Try to get the diameter close to the original tire size so it there is less risk of rubbing. Plus, the closer to the original diameter, the less the speedo will be thrown off.

Use this tool to figure out the best diameter:

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

 

yeah what he said

 

look on discount tire.. under the optional plus tires sizes they do all the work for you.. site seems to be down otherwise id have the info..

 

I have the info.......

 

/\/\/\/\ or charles... charles hows karri been doin? havent talked to ya in a while

 

Not bad, hanging in there....it's difficult at times.
Thanks for asking Johnny.

 

I have 225/40/18 front and 255/35/18 on the rear. The rear tires don't rub and the speedometer is right on, checked with a GPS system.

 

It's xxx/40/18 on the front, xxx/35/18 on the rear. The first number is just how wide the tire is, it doesn't effect your speedometer; that number depends on how wide your wheels are, and what the offsets are, so that the tires don't rub on your fenders.