I was looking over the rear suspension getting an idea what all i should take care of when i do the Big doggie mod and i noticed my drivers side tire sidewall is flush with fender , but the passenger side sidewall is inset about a 1/4 to 1/2 inch.. Is that a common issue and is there a fix for it or am i going to have to get creative to center it.

 

Been in an accident? all rims the same? drive right down the road or "crab"?

 

im not aware of an accident, it tracks and drives straight and fine, rims replaced after i bought it about a year ago and new tires. also alignment checked fine . only issues so far is a suspect rear hub bearing which is being replaced and the spring has bad bushings at the end links.

 

ervinc What all do you do for that big dog mod? It's been some time since I've heard anything about it. TIA

 

https://www.corvetteforum.com/forums...ng-rearend.pdf

 

https://www.corvetteforum.com/forums...ng-rearend.pdf

 

Why not just get wheels with the GS offset, they'll bolt right in.

 

mine is the same way and I have seen other post about the same problem so I believe that is the norm. Also if you jack the rear of the car up off the ground you will notice that the passenger side tire does not hang down as low as the drivers side.

 

i didnt use the GS wheel because it wasnt available in a sawblade, and i specifically wanted 91-93 17x11 sawblades for the rear. So thats where the big doggie mod came in

 

You've many issues with both your wheel condition , BTW '91 - '93 aren't the same either and the offset you've found.

If you actually want saw-blades of either '91 - '92 or perhaps '93 I'd have considered getting the 9.5 of whichever style widened to whatever width works best for the tire size you intend. You then can tweak the fit to your particular car.

Very quick #'s hint that if you added 1 1/4 you'd end up with something very near maybe an @70 offset so then you just use longer wheel studs and use pass through spacers OR bolt on adapters.

I believe this is way more practical than what you intend, much easier to go behind yourself for future repairs.

 

Im aware of the difference in the offsets of early vs late, the condition of the wheels isn't of any consequence since i have very little in the cost, the Big Dogie mod will take care of the offset issue, as for widening a 9.5 wheel to match the specific width i want, that wont work... the 1.5 inches would have to be added to the back of the wheel and would cause interference problems, thus the choice of ZR1 wheels and the Big Doggie Mod... but just for price comparison widening wheels in my area runs roughly $175 per wheel so that's $350 in modification of 2 wheels, then 2 tires at $125.00 each so that's another $250.00 so im at $600 dollars and still have a interference or a major reduction in back side clearance, so then add a spacer and im moving the wheel further to the front another $50.00 for spacers and $25.00 for studs ( $675.00) and if i send wheels out to be modified then another cost of shipping, so i would be in at $700.00 +/-. So far with dealing and bartering im at less than $500 including wheels tires brake caliper mounts and machining . anything else is maintenance items which cant be considered for the swap ... my issue is still is there a remedy for the offset to the drivers of the rear axle. Or i mean a easy remedy.. The numbers for the current swap wheels which by the way polished out very nice except for 1 which is getting rechromed for the cost of a case of beer and a drive down to visit a friend spoke for itself . That dictated the direction..

 

My first Corvette had this same issue as yours, only opposite --- mine had the driver's side tucked in while the passenger side was flush. My current car is the same as my first car, only not as bad.

By all I have read about this C4 issue, it's common for the rear tires and fenders to not line up exactly as we would like. I also read that this is a result of the body glue/bonding process during manufacture. The plastic fenders never end up in the exact same place on every car, there's a slight variation on each one.

 

thats what i coming to believe, its set to go to paint and bod later this year. i think i will see if i can do something while i have the rear axle assy out, once i reassemble it, i may use a shim on the opposite side to even it out. thanks everyone for replying.

 

Ervinc, I also have the slight variation in the rear end of my 96. I added a 3/16" shim and had no performance problems. It was driving me nuts having it offset like that.

Thanks,

 

My 93 is the same as well but it was in an accident.