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Old 11-03-07, 03:08PM   #1
INJUNTOM
 
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Default Wheel and tire fitment thread.

Let's use this thread to ask/answer questions about what size/offset tire and wheel package will fit various cars.
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Old 11-05-07, 06:16PM   #2
Bird Catcher400
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I know 15, 16, 17's can be done, is there anyone one with a staggered combo using 18s, 19s or even 20's (the latter is actually too big for my taste but I'd still like to see)?


Two people are using combos like 17x8 up front and 17x9.5 out back
Tires for the front are 245/45/17 with 275/40/17 in the rear. Both setups look awesome because they modernize the car with an aggressive look without actually taking away from the cars.



15" with 60 series raised white letter tires is still a good classic look but I've done it so many times, I'm ready to try something different. Show those 17+ inch wheel combos and let me know what backspacing your working with.
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Old 03-23-08, 06:14PM   #3
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i have a 78 firebird and was wondering how wide of a slick, or et street can you go with a factory leafspring 10 bolt set up, or if you can tell me what kind of wheel i would need to get a really wide tire without really tearing into anything. thanks
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Old 03-23-08, 06:45PM   #4
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My 76 T/A has been lowered about 1.5" from stock by installing a competition spring kit from Pro-Touring F-body. I decided to go with 17" TTII's. They are 8" wide with 4.75" backspacing all the way around. The tires are BFG G-Force T/A KDWS's (255/50/17) all the way around. There isn't too much room to go bigger in the front, but I could have gone bigger in the back with no problems. I just decided to compromise a little to get the same tire size all the way around, keep the profile the same front to back, and go with readily available tires. There is no rubbing anywhere with this tire size on 17" x 8" rims with 4.75" backspacing.

I really like the look. The 17" with the 50's give a nice low profile look and much improved handling, but don't look like rubber bands like the 40's do on an 18" rim.





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Old 03-24-08, 12:02AM   #5
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Johnsma22- could you tell me what how high your wheel openings are - measure ground to outer lip, front & rear.
mine are 26"front / 29" rear. I cant tell if my front springs are new lowered or old saggy. they're supposed to be new.
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Old 03-24-08, 01:40AM   #6
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Sure will Silverbird. I'll do it for you tomorrow and post the results ASAP.
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Old 03-24-08, 03:25PM   #7
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Silverbird, the wheel opening heights from ground to outer lip on my car are 27.5" front/28.75" rear.
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Old 03-25-08, 01:15AM   #8
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Quote:
Originally Posted by 69royaljudge455 View Post
i have a 78 firebird and was wondering how wide of a slick, or et street can you go with a factory leafspring 10 bolt set up, or if you can tell me what kind of wheel i would need to get a really wide tire without really tearing into anything. thanks
On my 78 T/A I use:

ET Street Part# 3755 28" x 12.5" - 15LT which has a 10" tread on a 15x8 with 4.5" backspace

ET Drag Part# 3055S 28.0'' x 10.5'' - 15'' Stiff Sidewall Construction which has a 10.5 tread on a 15x8 with 4.5" backspace

I also have a set of 15x10 with 5.5" backspace that I use to run around with on the street with my old setup but now with the Landrum leaf springs I have an issue with my passenger side leaf spring clamp barely rubbing the tire under hard launches. Also the lower mount on the cal-trac had to be ground down some. I had to beat the rear seat hump in the fender well. Also had to relocate my shocks to the inside of the leafs for better clearance. The 10" rims always made to car look like it was mini tubbed. The 8" rim is a lot less work and looks good. I currently have a ford 9" but had the same wheels on the 10 bolt. Hope this helps

This picture is with the 10.5" ET Drags on the 8" rims.. Love the stance
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Old 03-27-08, 05:32PM   #9
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thanks alot guys, wow both of those cars look amazing. you guys have some nice ta's thanks for the info.
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Old 03-27-08, 09:06PM   #10
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Hope it helps....


Thanks for the amazing comment...Just a money pit

Last edited by 598TransAm : 03-27-08 at 09:38PM.
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Old 08-08-08, 11:34PM   #11
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Default 1971 LeMans Disc Brakes 14x6 Rallye II's, backspace?

For a '71 LeMans front disc, what should the backspace measurement be on a set of 14x6 Rallye II's?
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