tire size??
Thread Starter
Intermediate
Joined: Aug 2008
Posts: 46
Likes: 0
tire size??
Got on 05 vert
Im getting new rims most likely from house of wheels.
I want to keep front size stock 18x8.5 But plan on changing rear setup to a 20" x 11" rim. Will that fit width wise, and what size tire should I go with???
Im getting new rims most likely from house of wheels.
I want to keep front size stock 18x8.5 But plan on changing rear setup to a 20" x 11" rim. Will that fit width wise, and what size tire should I go with???
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 25
From: Austin Texas
Unless you want problems with the TC and A/H you have to replace tires with the same as stock diameter F & R. Since you are keeping the front tire stock diameter you will have to keep the rear tire the stock diameter of aprx. 26.9".
Try to find a 20" tire with 26.9" diameter that will fit a 20" X 11" wheel.
http://www.miata.net/garage/tirescalc.html
Try to find a 20" tire with 26.9" diameter that will fit a 20" X 11" wheel.
http://www.miata.net/garage/tirescalc.html
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 25
From: Austin Texas
I have no idea. It probably depends on the offset of the wheel as to whether a wider TIRE (not wheel) would rub. Some on this Forum claim a 305mm width tire will fit without rubbing but I don't know what offset or wheel width they are using. I had 295mm tire on stock offset 10" wheels and they didn't rub, not even close.
Burning Brakes
Joined: Sep 2005
Posts: 896
Likes: 0
From: St. Lucie, FLORIDA 757 RWHP 694 RWTQ
Bob
Speak with Bob as he is very helpful and I purchased my black aftermerkets there. MAKE SURE you size them right as stated by haljensen below......
Unless you want problems with the TC and A/H you have to replace tires with the same as stock diameter F & R.
I was tripping codes AT THE TRACK with the aftermarkets BUT NOT on the streets with everyday driving. It would throw codes at the track and actually slow down the car's times. I learnt my lesson once and hope to help you BEFORE you buy the wrong sizes.
Unless you want problems with the TC and A/H you have to replace tires with the same as stock diameter F & R.
I was tripping codes AT THE TRACK with the aftermarkets BUT NOT on the streets with everyday driving. It would throw codes at the track and actually slow down the car's times. I learnt my lesson once and hope to help you BEFORE you buy the wrong sizes.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 25
From: Austin Texas
Just remember the tires alesman is a SALESMAN, his job is to sell you tires. Stock 245/40/18 will mount on anywhere from 7.5" to 9.5" wheels but only "fit" 8.5". Check the manufacturers site, they will usually give reccomended wheel sizes for the tire size but remember my first statement above, they're there to sell tires.
