Same size wheel front and back?
Thread Starter
Pro
Joined: Mar 2011
Posts: 738
Likes: 0
From: Tuscaloosa AL
Same size wheel front and back?
I'm curious to know if there are any problems what-so-ever with putting 18" wheels on front and back? Will this change anything about the car? If I did put 18" all around would I be able to put the same size tire all around?
I have Magnesuim wheel on my Vert and the front 2 have a couple rash marks. I have a friend who has a couple of 18" he had and would give them to me for free but my fronts are 17" and backs are 18". The backs are in perfect shape. Hence, my question. =)
I have Magnesuim wheel on my Vert and the front 2 have a couple rash marks. I have a friend who has a couple of 18" he had and would give them to me for free but my fronts are 17" and backs are 18". The backs are in perfect shape. Hence, my question. =)
Melting Slicks
Joined: Apr 2009
Posts: 2,479
Likes: 36
From what I have read, it will cause a problem with the traction control and active handling systems. The system is programmed to expect a difference in rotational speeds from front to back. If it doesn't sense that anymore, it will think that there is a problem and will throw codes and/or stop working.
You can have the same sized wheels but you need to install smaller diameter tires in the front. Also, make sure that the offset is correct for the fronts.
You can have the same sized wheels but you need to install smaller diameter tires in the front. Also, make sure that the offset is correct for the fronts.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
No problems what so ever. But you must turn AH/TC OFF. Not comp mod but OFF each time you start the car.
actuality the vette handles very well with a same size tire on all four corners.
actuality the vette handles very well with a same size tire on all four corners.
Melting Slicks
Joined: Feb 2009
Posts: 2,857
Likes: 234
From: SW Nuh Hampsha
2018 C5 of Year Finalist
Wheel size has nothing to do with the traction control problem. It's the overall diameter of the tires that do, however. I have the exact setup you're looking for with no issues at all: 18"x9.5" magnesiums at all four corners. Tires are BFG KDW NT - 275/35-18 front and 285/40-18 rear.
As mentioned earlier, you want at least .3" difference in diameter between front and back to avoid T/C problems.
As mentioned earlier, you want at least .3" difference in diameter between front and back to avoid T/C problems.
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Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Racer
Joined: Jan 2006
Posts: 399
Likes: 1
From: Jasper, GA
St. Jude Donor '10
I have 285s front and 315s rear mounted on 18" wheels all the way around . . . no problems here also. BTW, same series being equal, the wider the tire, the taller (more inches in diameter). Use the 1010 tire calculator link if you need more info on tires. http://www.1010tires.com/TireSizeCalculator.asp . There used to be an Excel corverette tire spreadsheet posted somewhere on the tech forum, but I couldn't find it. It also helps out when choosing tires. The biggest thing is not to exceed 3% difference between front and rear tire diameters. The tire calculator will flag any combo that exceeds 3%. Hope this helps.
Mike C sends
Mike C sends
Florida turtle advocate
Joined: Dec 2003
Posts: 4,280
Likes: 6
From: Gulfcoast Salvage Englewood, Fla
St. Jude Donor '05-'06
I tried my 17X11s with 315s all the way around on my 98 and it didn't like it but they work fine on my 02 without turning anything off. There is a minor rub in full lock but not really an issue.
