275/60 vs 295/55 pro's and con's

[Vicious95Z28]

Using the 10" wide wheel with a 5.5" offset, and narrowing the rear 2" per side would end up with the wheel in the exact same position as my stock width 12-bolt w/ 10" wide, 7.5" BS wheels. This is an M/T ET Drag 28x10.5-15W. It is 28.1" diameter, 13.1" wide. By comparison (assuming M/T ET Street Radial):

295/55:
-diameter = 27.8"
-width = 12.0"

That would put the outside edge of the tire about 1/2" deeper in the fender, compared to the photo.

275/60
-diameter = 28.0"
-width = 11.0"

That would put the outside edge of the tire about 1" deeper in the fender compared to the photo.

Also note that M/T uses an 8" wide wheel to measure the 275/60.

Narrowing 3" (1.5" per side) instead of 4" would move the 275/60 back to within 1/2" of the photo, but as you already realize, that limits you when looking to go wider on the tires.

Fred, I would like more side profile and 1/4 panel clearance pics if you have them. I hear that Birds have a lil more room in the 1/4's than us Camaro guys have.

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[Injuneer]

I'll post as many as I can that may help you.

[Injuneer]

A few more

[Vicious95Z28]

Thanks Fred, I appreciate that. Do you know how much wider Bird quarters are?

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[Formula218]

Thanks Fred, I appreciate that. Do you know how much wider Bird quarters are?

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Wide enough to clear a 315 without rolling or hammering, if that helps. But they were only 35 series, going taller next time to fill in some of the gap. I love how tall Injuneer's rears are.

[Injuneer]

My street wheels are the replica ZR1/GS 17x11's, 50mm offset, with a BFG 315/35-17 Drag Radial. At first, I did not roll the fender lip. But (when the car still had the T56 and Street Twin) on really hard shifts, the body would torque sideways hard enough to put the lip against the sidewall. Then I rolled them.

Buddy of of mine had the same street wheel/tire setup on his 30th Anniversary SS, and I'm pretty sure he had the fender lips rolled from day 1. He had no problems with rubbing on the street tires with the lip rolled.

[Vicious95Z28]

My street wheels are the replica ZR1/GS 17x11's, 50mm offset, with a BFG 315/35-17 Drag Radial. At first, I did not roll the fender lip. But (when the car still had the T56 and Street Twin) on really hard shifts, the body would torque sideways hard enough to put the lip against the sidewall. Then I rolled them.

Buddy of of mine had the same street wheel/tire setup on his 30th Anniversary SS, and I'm pretty sure he had the fender lips rolled from day 1. He had no problems with rubbing on the street tires with the lip rolled.

You needed an ARB, Fred, lol!

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