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your stock tire is 205/55/16
you could probably go 225/50/16
Once again, with this setup, the overall diameter of the tire is almost the same (0.1% smaller than stock)


your stock tire is 205/55/16
you could probably go 225/50/16
Once again, with this setup, the overall diameter of the tire is almost the same (0.1% smaller than stock)
Right now im running :
225/45-17 Front
245/40-17 Back on 2005 SS Wheels
Need new tires and wheels. Was thinking about getting 18" 's :
http://www.konigwheels.com/catalog_p...ID=1&ss_id=214
With new BFGoodrich g-Force T/A KDW 2 Tires
Now .... i have checked sizes in this forum, but couldnt find limits for 18" wheels
. I saw that tirerack said it would fit 255's on 18" 's on the back, but i know they dont fit on 17's (tried it, got rubbing)
.Can anybody help me out ?
Regards Spyder
http://www.miata.net/garage/tirecalc.html
All you have to do is enter the OEM setup and then enter in different sizes that'll match the same rolling diameter or very close to it. So you don't have to DIY this time, according to the calculator, ideal size would be:
225/40R18 Front
255/35R18 Rear
Last edited by drexappeal; May 22, 2006 at 03:53 PM.
will rub against anything if put on my car, less than if the
tire will fit the wheel.
Very useful tool though, Thank You

The Best of Mercedes & AMG
Last edited by RES; May 23, 2006 at 12:46 PM.
here. but....From STFF... I found out most ppl are having this setup for sports sedan:
Front: 235/40/18 on a 18x8.5 Offset 32
Rear: 255/35/18 on a 18x9.5 Offset 35
However, IF I want to stick to the original width of 225 (Front) and 245 (Rear) in 18"s, What size rims (in width) should I got for and what offset? Would 18x8 and 18x9 fit nicely? I would like the tire fit nicely with the rims, hence better "lip protection".
thanks in advance.
Last edited by CM208; May 24, 2006 at 12:35 AM.
I NEED A GOOD SETUP WITHOUT RUBBING
Now the size calculator helped with selecting right wheel and tire match,
but WILL IT FIT THE CAR WITHOUT RUBBING ?
Thanks again to all those who already took their time to comment.
Where are my coupe people ???!!! Wake up lol
Im going
please helpspyder
My main point is, do you have any problems with the 17's you are running on right now (which are made for the Sport Sedan)? If not and you get the proper offset on whichever 18's you decide to get and keep the overall rolling diameter the same, it doesn't matter if you're putting the rims on a coupe or a sedan. If you are having problems with rubbing on the current 17's, then I really can't be anymore help. If not, then the information many people have provided should work WITHOUT rubbing (again, regardless of whether it's a sedan or coupe).
Now, if you're considering DROPPING the car, that's a different story.
My main point is, do you have any problems with the 17's you are running on right now (which are made for the Sport Sedan)? If not and you get the proper offset on whichever 18's you decide to get and keep the overall rolling diameter the same, it doesn't matter if you're putting the rims on a coupe or a sedan. If you are having problems with rubbing on the current 17's, then I really can't be anymore help. If not, then the information many people have provided should work WITHOUT rubbing (again, regardless of whether it's a sedan or coupe).
Now, if you're considering DROPPING the car, that's a different story.
it only rubs when his car is full of ppl, i believe.
it only rubs when his car is full of ppl, i believe.
Your question has been answered for the most part. However, if you insist, make this site your best friend.
http://1010tires.com/TireSizeCalcula...?action=submit
if you have 40 in the back ... you should have 45 in front. imagine how much rubbing you would have just in front and not even turning the wheel all the way.
Last edited by kickR; Jun 3, 2006 at 11:13 AM.




