[Z06] Rear Tire Width
Melting Slicks
Joined: Sep 2008
Posts: 2,389
Likes: 5
From: Northern Virginia
Sir,
I have already a file pretty complete on the subject...and I share with the members here my experiences (ref e.g. my Threads).
Be sure that the search button is a "tool" I deeply recommend to every one new here around.
A file is never too much updated and all piece of information is precious to avoid mistakes.
I am sure you will contribute to educate me on this item and your knowledge about how to weld the aluminium barrels is welcome.
Christian
I have already a file pretty complete on the subject...and I share with the members here my experiences (ref e.g. my Threads).
Be sure that the search button is a "tool" I deeply recommend to every one new here around.
A file is never too much updated and all piece of information is precious to avoid mistakes.
I am sure you will contribute to educate me on this item and your knowledge about how to weld the aluminium barrels is welcome.
Christian
Instructor
Joined: May 2006
Posts: 153
Likes: 0
From: Winnipeg MB
Le Mans Master
Joined: Nov 2001
Posts: 8,080
Likes: 151
From: Toronto
That croped side shot doesen't show much, take some more, side /rear. I really would like to see a 335 on a 10.5'' fit flush to the fender! 
...furthermore a 335 on a 10.5'' cannot make a full footprint so you're defeating the purpose of the larger tire.
...furthermore a 335 on a 10.5'' cannot make a full footprint so you're defeating the purpose of the larger tire.
Night Owl for life
Joined: Nov 2003
Posts: 24,721
Likes: 4,559
From: Bugs Bunny should'a made a left turn here
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Cruising
Joined: Jan 2009
Posts: 11
Likes: 0
From: Miami Fl
I read a magazine article about upgrading a C5 to wider tires. They said that you could go 18x9.5 fronts with 275/35R18 and 19x11 in the rear with 325/30R19. The front wheels had a 57mm offset and the rears had a 64mm offset. These sizes fit flush with the fender. Hope this helps.
Le Mans Master
Joined: Nov 2001
Posts: 8,080
Likes: 151
From: Toronto
The OP was asking about stock Z06 10.5 wheels.
The ideal fit is having the tire inside the lip, not flush. If lowered, and hit a pothole/curb etc. you would make contact with the fender possibly cracking it. 11'' for a 325 is the minimum squeeze!
If you're spending the money on custom wheels, and you want biggies, do it right the first time...tub it, or L5 flares. Tires sticking out looks cheezy, and looks like you borowed them! Hey it's my car, and I wouldn't be seen like that...unless I had a 'Wheelskin' on my SW. 
Frank
The ideal fit is having the tire inside the lip, not flush. If lowered, and hit a pothole/curb etc. you would make contact with the fender possibly cracking it. 11'' for a 325 is the minimum squeeze!
If you're spending the money on custom wheels, and you want biggies, do it right the first time...tub it, or L5 flares. Tires sticking out looks cheezy, and looks like you borowed them! Hey it's my car, and I wouldn't be seen like that...unless I had a 'Wheelskin' on my SW.
Frank
I read a magazine article about upgrading a C5 to wider tires. They said that you could go 18x9.5 fronts with 275/35R18 and 19x11 in the rear with 325/30R19. The front wheels had a 57mm offset and the rears had a 64mm offset. These sizes fit flush with the fender. Hope this helps.
Last edited by JETZ; May 5, 2009 at 01:27 AM.
Melting Slicks
Joined: Jul 2008
Posts: 2,000
Likes: 2
You would have to be pretty low (aftermarket bolts low) and have a pretty wide tire in order for the tire to rub and crack the fender. But at that point handling is compromised anyway so I doubt that a person like that is concerned with anything more than ‘looks’ to be worrying about how wide of a tire can I squeeze under the car on stock wheels for that matter.
305/35-18 for the practical fit but 315/30-18's are fine on the stock 18x10.5 wheels. It's best to check the tire manufactures specs before buying tires to be on the safe side though.
305/35-18 for the practical fit but 315/30-18's are fine on the stock 18x10.5 wheels. It's best to check the tire manufactures specs before buying tires to be on the safe side though.
Melting Slicks
Joined: Apr 2009
Posts: 2,431
Likes: 77
From: Lake Charles Louisiana
random question, Would it be possible to put a nitto drag radial 315/35/17 on the front tires, and put them on the back, just for the strip?
I can get that nitto used VERY cheap, and I still have the stockers, looking for a cheap drag solution if possible, and I know the nitto runs a little small.
I can get that nitto used VERY cheap, and I still have the stockers, looking for a cheap drag solution if possible, and I know the nitto runs a little small.
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
315/35-17 belongs on a 17x11 wheel if you want it to sit square. Autocrossers squeeze them on 17x9.5 rims and get away with it. For drag racing though it might be a problem. Low air pressure and the tire might slip around the rim. You'll have trouble getting a full contact patch with that tire on a narrow rim. For AX it works for some.
