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Hi to all. After presenting myself a couple days ago, I start asking some questions about doubts I have.
I’ve gone arround the forum reading a lot of threads, but I still don’t have things clear about a matter related with wheels, and I hope you all may help me.
I own a 1973 C3 in Spain, and I want to replace rear wheels and tires for ones bigger and nicer. The problem in Europe is that the wide of wheels and tires have the limit of the fender flares. I mean, that they can’t go beyond fender flares. Not even half an inche.
I love that tires get just to the limit of the flare, but, as I said, they can’t go beyond it. I want to fit 275/60 R15 rear tires, that, as I have watched at many C3 Corvettes here and at C3 Facebook group, look just great. And, as I have watched in most pics, they get just to the limit of flares.
And about wheels, as I watched at Ecklers, there are two Vision brand ones wich I like very much. More even than Cragars. I have 2 possibilities about wheels:
1- 15x10, -25 mm offset, and 4.52 inches backspace.
2- 15x10, 0 mm offset, and 5.50 inches backspace.
The ones I like the most, as I love rear wheels to look very “deep”, are the ones at number one with 4.52 backspace. But, what do you think about it? Ones at number one together to 275/60 R15 tires, would protrude from fender flares? If so, how many inches would go beyond flares? And no issues should be done about brakes or rubbing at any place?
It's hard for me to use the calculator, as I don't know neither the width and offset of my actual rear whells.
I will ask in a diferent way: Anybody is running 275/60 R15 tires on 15x10 wheels with 4.52" backspace? If so, do they go beyond flares? And any rubbing at any place?
It's hard for me to use the calculator, as I don't know neither the width and offset of my actual rear whells.
I will ask in a diferent way: Anybody is running 275/60 R15 tires on 15x10 wheels with 4.52" backspace? If so, do they go beyond flares? And any rubbing at any place?
You do know the size of factory wheels and tires that do not extend beyond the fenders. 15x8, 4 backspace, -12mm offset. If you don't have factory wheels, remove the wheel and measure it.
It's hard for me to use the calculator, as I don't know neither the width and offset of my actual rear whells.
I will ask in a diferent way: Anybody is running 275/60 R15 tires on 15x10 wheels with 4.52" backspace? If so, do they go beyond flares? And any rubbing at any place?
The first pic is my car in 1973 just after installing the American 200s and Goodyear Polyglas GTs. The rears are 15x10 with a 4.5” backspace. L60x15. No modifications, no rubs. The fronts are 15x8.5 with G60 x15. Very slight rub on the frame at full lock.
Unfortunately for you, the rear tread stuck out 1” beyond the top of the fender, with the sidewall protruding another ~1”.
In the second photo, I had modified the fenders to move the lip out to cover the tread but the sidewall still does protrude about an inch.
Bone stock. No mods. Rear fenders move outward 1”.
Ok, Thanks for the answers. Then 15x10 rear with 275/60 R15, with 4.5 backspace don't require any modifications and no rubs. But it would protude 1 inche. And, if backspace was lower, it would potude even more, I guess. Maybe the solution for me would be to fit some flare extensions like in the pic attached. Or run smaller wheels.
Not sure you can fool the regulators but getting creative with some temporary extensions might get you what you need for the inspection and then you can remove.
So my rear setup to use to estimate yours is 15X8.5 with 4.25 backspace and 275-55-15 tires. Tires do not stick outside the fenders but are close. 275 60's can pose a problem as they are taller than stock if you are close can crack a fender. Ask me how I know.
Help about wheels and tires
