Motohead279

They are 20x11

If I decide to go to a 335 I will need a 20x11.5 -12.5.

Off the top of my head I don't recall the offset.

Im facing a serious traction dilemma. For the track Im going to put on a set of 18" rears with DRs. But for the street I want to keep my 20" wheels because I like the looks. But at 1150rwhpn to be more) there are little to no options on tires. Im running Toyo 888s right now and I can spin them in 3rd. Just debating on ordering a wider rear rim and trying a 335 or going down to a 19" wheel where there are more tire choices.

savage

I'm just trying to help and learn, this is coming from a guy who busted his rear inner fender lips off and crack the rear quarters ( a nightmare)with 315/30/18 on the wrong offset wheels( +58) offset is everything on base/z51 cars( my c5 could run anything from a 315/35/18 up front to a 335 anything in back)not these c7's , I wish I knew if there is a offset that will work in the rear to run a 325/30/19 hoosier( yes I can do the math a say +85 and the rear inner fender lip is safe but I don't know if a +85 offset will clear the inner wheel well?? Like yourself I'm not talking show wheels/tires , I'm talking drag/track setups. There is so much more I can say that I learned- the widest a wheel can be on a 18 inch wheel is 11, I could go on and on , with this being said can you try to find the offset of the 20x11 wheels you have and post or inbox me everything you learn on max tire/ wheel size, I have 335/30/18 a7 Hoosiers that I don't have the b*lls to try until it works for someone I trust! Thanks

NTMD8R

David,
you know I am running 315x30x20 Toyo R888 rears on 20x11 wheels with orig offset (79mm),
and at stock height and -2.0 camber, there is no rubbing.
This is with Highway driving and pretty severe autocross.

blown81bu

how about a 19x11 for a c5...c6z replica with nt05rs 305-35-19

savage

Thanks , the -2.0 neg camber might be the magic there , but it works so it goes in the books!! Lol, there are two more things I'm trying to know, can we put a +85 offset wheel back there ? If we could that would open the door for 325/30/19 a7 Hoosiers. also let's not forget a 11.5 wheel is 1/4 inch deeper in wheel well than say a 11 inch with same offset, so that +85 offset I'm talking about on a 19x11 is less deep in wheel well than 19x11.5 with same +85 offset, ( how deep can we go?)I don't want to be the guy to spend thousands on wheels that don't clear/work,

savage

I'm sure that's posted on C 5 forum , my c5 worked with anything/ everything I tried , also it's hard to help unless you post offsets, offsets are everything !!!