solarstingray

after a long waite i finnally got the new custom wheels for my c7 corvette,


specs are
20x11 rears with a 305-30-20 rear tire
20x9.5 fronts with 275-30-20 front tire


tires are the new nitto 888 g2s brand new to the market


car is lowered on factory bolts, "minor lowering"


going into this i was expecting to have some issues or a tight fight for the fronts since not many people do a 20x20 set up and running a wide 275 front tire, it actually fits with ease


the rears are a pretty standar size nothing to extreme the rims are made specificly for the corvette no hub rings needed or aftermarket bolts direct fit and direct offsets,


the probelm i have is the passanger side tire is rubbing the inside fender lip,


i double check all the tire widths and rim sizes and off sets everything measure up exact,


my first idea or option was to put some negative camber in the rear just enough for it to clear, 1.25 is what the alignment shop did, drove out of the shop and the car felt it was driving on ice almost wrecked leaving the stop light , that wasnt going to work, so i brought it back and set it back to factory specs, drives perfect again.


next i took a metal file and tried to shave some of the inner fiberglass fender out but its not working either, i need to take a lot out a good 1/4 inch or so ,


can some explain why only the passanger side has issues and not the drivers side, the driver side clears with ease !!


the only concolusion is durring the build of the car some one messed up ?


im really at a loss ? any help would be great, i cannot return the tires now or the rims


posting pics also

solarstingray

solarstingray

the last pic is where i did some filling on the fiberglass obvously not enough,


i cannot for the life of me figure out why one side would rub and not the other,

rcooper

I don't have a clue, but I would find another C7 and measure your car and the other car to see if the width in the wheel wells are the same or if your's is different. If different find another C7 and do the same thing.
This could be a fitment issue or some thing built in by the factory to allow for parts fitment on the frame, or something like that.
Check with a good body shop and have the car checked to see if it's square or maybe you could check with customer service and get an answer.
Good luck on finding a cause and a solution.

solarstingray

thanks rcooper


i think im going to swap the wheels tonight, even though there direction just to drive a few miles and see if it does the same thing, maybe it will tell me if its the wheel or the car if it does the same thing,


my buddie has the exact same car also maybe i can askhim to try them also and see if they rub on the passanger side of his also,


im really out of ideas on this,

felkebg

I would make sure you tell your friend that you only want to jack up his and see if they touch while rotating them in his driveway by hand...... Also, can't you just adjust the lowering bolts until they don't rub? Finally, what was your original goal in changing out the sizes?

solarstingray

felk, i have raised the car to almost stock height now,


it helps a little but any big bumps or dips in the road it rubs,


mine was the base model with the 18/19 set up, wanted it to look better, and also better tracton the stock RFT 285 tires was horible at track events,


these are also lighter then the factory wheels,

C8Jake

Tire/wheel assembly extends +1" further outward than stock + larger 27.24" diameter...perfect recipe for rubbing!
Run a straight edge on your tires from floor to fender lip & measure the gap.
You'll find a larger gap on the > RIGHT.

solarstingray

c7jake, thats what i leading to, one side is off


how can this be on such a expenive car? or the fact there hand built and some one was drunk durring assembly ? LOL

C8Jake

Rear frame assembly isn't centered.
If you're mechanically confident, loosen the bolts to correct it or locate a competent dealer tech.
Likely within factory tolerance for stock wheels/tires, so don't expect a freebee.
Even then, ya still might rub with that combo...lesson learned.

01VETTECOP

Yo, that Shts Cray !

solarstingray

c7jake, could a body shop do that?


might be a lot involved on shifting the whole rear subframe.


might just have to dremel the fender out,

C8Jake

It can easily be done with a hammer & 2x4...there's allowance for adjustment.
Why not take it to your dealer & explain the issue?
I'd advise against the dremel.

solarstingray

CandyRed77

Those pictures indeed show what was discussed above, you rear sub frame isn't centered on the body. I recall some issues with that some C6 as well. It is all fine and within tolerance for the stock wheel set-up, but if you start pushing it to the limit you might have issues. If you're not comfortable tackling this yourself I would suggest taking the car to the dealer or any other decent shop and they should be able to loosen the subframe and center it.

solarstingray

stupid question would this be covered under waranty, i know shot in the dark ?


has any one done this before or any experience moving it over ?


thanks again for all your help guys

C8Jake

only 1 way to find out

SRQStingray

You can ask, but I doubt it.

solarstingray

ugh =<

Glen e

It SHOULD be...but many jerk dealers out there....and will blame your wheels.....I had two sets of TSW wheels, your size, and no rub.