Tire Size Question
Thread Starter
Racer
Joined: Jun 2004
Posts: 424
Likes: 59
From: Warner Robins GA
Tire Size Question
My apologies if this has been asked before, there's a lot of threads to go through and the search didn't immediately turn up what I was looking for.
Does anyone know the maximum tire width we can use on these cars front and rear even with a custom offset wheel? I'm looking at adding a set of Vossen 20" front and 21" rear wheels, I would like know if the tires can go a little wider than the stock 245 and 305 sizes. This is a Z51 package too.
Thank you all in advance!
Does anyone know the maximum tire width we can use on these cars front and rear even with a custom offset wheel? I'm looking at adding a set of Vossen 20" front and 21" rear wheels, I would like know if the tires can go a little wider than the stock 245 and 305 sizes. This is a Z51 package too.
Thank you all in advance!
Instructor
Joined: Jan 2020
Posts: 156
Likes: 114
Thread Starter
Racer
Joined: Jun 2004
Posts: 424
Likes: 59
From: Warner Robins GA
Instructor
Joined: Jan 2020
Posts: 156
Likes: 114
Wouldn't it be dangerous to go over width on the rims with stock tires ? Like let's say you decide to go really fast at the track and hit 180 mph, wouldn't you want to be on the right setup? I think a problem at high speed could be catastrophic... Just wondering....
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Thread Starter
Racer
Joined: Jun 2004
Posts: 424
Likes: 59
From: Warner Robins GA
There are vendors selling 20/21" combos that claim they fit just fine and I've seen some posts that claim the front is a very tight fit going to 20" and might scrub in the inner fender in some circumstances. That's got me worried to go with a 20/21" combo.
Safety Car
Joined: Dec 2009
Posts: 4,300
Likes: 3,199
From: Oro Valley Arizona
Just the Facts
My apologies if this has been asked before, there's a lot of threads to go through and the search didn't immediately turn up what I was looking for.
Does anyone know the maximum tire width we can use on these cars front and rear even with a custom offset wheel? I'm looking at adding a set of Vossen 20" front and 21" rear wheels, I would like know if the tires can go a little wider than the stock 245 and 305 sizes. This is a Z51 package too.
Thank you all in advance!
Does anyone know the maximum tire width we can use on these cars front and rear even with a custom offset wheel? I'm looking at adding a set of Vossen 20" front and 21" rear wheels, I would like know if the tires can go a little wider than the stock 245 and 305 sizes. This is a Z51 package too.
Thank you all in advance!
Last edited by papillion; Jul 30, 2020 at 09:45 PM.
Le Mans Master
Joined: Aug 2000
Posts: 5,529
Likes: 1,943
From: Austin Texas
For restricted purposes (like track driving) there are ways to limit steering lock so that bigger wheels do not make contact with the A-Arms (which would be bad.) This would not be wise on a street car that may have to negotiate a sharp hairpin turn.
Of course larger diameter wheels also help prevent the wheel from making contact with the A-Arms, but the compliance of the ultra-short sidewall is already limiting lateral grip.
Of course larger diameter wheels also help prevent the wheel from making contact with the A-Arms, but the compliance of the ultra-short sidewall is already limiting lateral grip.
Instructor
Joined: Aug 2019
Posts: 152
Likes: 90
It's right - it was based on the sizes available in the tire model I wanted to run, and maintaining a similar front:rear circumference ratio. Plenty of room over the brakes, pretty sure you could do 17's if you wanted.
My setup would go full lock to lock without rubbing, not sure theirs does - I think there might have been room for a little more in front with a larger diameter wheel though.
My setup would go full lock to lock without rubbing, not sure theirs does - I think there might have been room for a little more in front with a larger diameter wheel though.
Drifting
Joined: Jun 2020
Posts: 1,550
Likes: 1,921
From: San Jose
Last edited by Shokosugi; Aug 5, 2020 at 11:00 AM.