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I have a '67 Convert with original 14x6 rallys. Over the winter I am going to put on Cragar SS's with BFG T/A's. My buddy has two 275-60-15's already mounted on 15x7 SS's that have never seen the road. (I can get them at a real good price.) I mounted one on the rear to check the fit. Looked good, good clearance with no indication of any problem while sitting. I didn't drive it fearing scraping the tire. I put my hand over the tire and had him push up and down on the rear bumper. At the lowest point, the fender lip was starting to touch/pinch my fingers, but not crush them. Would that be enough clearance to avoid any rubbing under normal driving conditions? If not, am debating having new leafs made with a 1" rise or going with a narrower tire. Any thoughts?

[ 11-23-2004, 02:20 PM: Message edited by: 67 Convertible ]
 

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Ask and hopefully this will help!!

1st Generation ’67-’69 Camaro

http://www.chevyhiperformance.com/techarticles/92318/index1.html

These are reference charts only. All sizes should be verified before purchasing.

FRONT

15-Inch Wheels Backspacing: 3.75 Wheel width: 7.0 Tire size: 225/55

16-Inch Wheels Backspacing: 5.0 Wheel width: 8.5 Tire size: 245/50

17-Inch Wheels Backspacing: 5.0 Wheel width: 8.5 Tire size: 245/40

REAR

15-Inch Wheels Backspacing: 4.875 Wheel width: 8.5 Tire size: 28x10.5

16-Inch Wheels Backspacing: 5.5 Wheel width: 8.5 Tire size: 255/50

17-Inch Wheels Backspacing: 5.5 Wheel width: 9.5 Tire size: 275/40

pdq67
 

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Discussion Starter #3
Thanks pdq. Was just wondering tho..is a 1/2 to 3/4" clearance enough, when bumper is pushed down to it's lowest point?? Maybe should just go with narrower tire???
 

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it would depend on the backspace on the rim as to the clearance.a 15x7 is a little too narrow to comfortably size a 275-60 it causes the side wall to bulge out too much. a 255-60-15 on a 15x8 rim with 4.5 inch backspace is optimal you might be able to comforably fit the 255-60 on a 15x7 but again where it will sit/fit inside the wheel well will depend on the b/s of the rim...if you get the b/s right you really do not have too mess around too much with jacking it up or down unless the 70's hot rod look is what you are after.
 

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Larry's Callahan's great Pro-Touring site has a tire/wheel/car fitment "matrix" that they made up to be able to keep track of what is being actually mounted!!

You might want to go over there and find it..

Say hello to Larry for me if you do..

pdq67
 
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