I want them all 4 to be same size and to last a little while.

I am just using them on my daily driver car not a race car.

Discount tire list 3 sizes but I want speedo to remain correct..


215 45 17
215 50 17
225 45 17


what is the correct size to use or ca nI use them all and still be speedo correct?

thanks

 

Here is RE Ted's excellent page for what you need:

http://fc3spro.com/TECH/MODS/RT/tires.htm

 

did u try that tire size Calculator link i sent you? 205/60R15 is stock height. So put that in the 'stock tire' window, then mess around with the 'new tire' untill you find something you like. I would go with the 225/45 because the 215's is probably going to be to narrow for the wheel! Also, the 225/45 is really close to stock.

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