67 Chevelle 12 bolt Torque Thrust II's and 295 50R15 tires. What is the backspacing that I need, to keep these from rubbing, with a stock suspension? I have tried searching around here but the more information I put into my search the more BS I get, LOL> I was reading that it should be 4.75"?

What is the difference btw a 67 and 68 12 bolt? Is the 68 1" wider?

Thanks in advance,
Mike

67 Chevelle 12 bolt Torque Thrust II's and 295 50R15 tires. What is the backspacing that I need, to keep these from rubbing, with a stock suspension? I have tried searching around here but the more information I put into my search the more BS I get, LOL> I was reading that it should be 4.75"?

What is the difference btw a 67 and 68 12 bolt? Is the 68 1" wider?

Thanks in advance,
Mike


What width wheel? Have you looked at the Wheel & Tire Database?

A 295/50-15 is going to be very tight on a 67 Chevelle.
Using a 15X8 you will need 4.50 backspacing.

Dave

I would be using an 8" wheel. The database only had two entries and only one listed the backspace. From what I was reading I kept seeing 4.75" but wanted that number confirmed. Does the 4.5 give enough room at the quarter lip?

I would be using an 8" wheel. The database only had two entries and only one listed the backspace. From what I was reading I kept seeing 4.75" but wanted that number confirmed. Does the 4.5 give enough room at the quarter lip?

If it's the traditional Torque Thrust D wheel, you can't get a 4.50 or 4.750 basck space. Hope I'm wrong, but that's what I found out.

You will have to roll the fender lips and the lower portion of the shock will be very close to the inside wheel lip. I ran stock Chevy Rally wheels with one inch extra back space and they barely fit my 67. I went and measured my wheels for you and they look to be 4.25" on back spacing. I think you can go to 4.5" before you will hit the shock. The exhaust pipe would rub on my car in a hard turn. I ended changing to 275/60's and was happier with the fit and look. Here is a pic of mine with 295/50's on the rear and 245/60's on the front. Good Luck :cool:

A 9.5" wide wheel will fit with 5.25" of backspacing and you should be able to use a 295 series tire.

I would be using an 8" wheel. The database only had two entries and only one listed the backspace. From what I was reading I kept seeing 4.75" but wanted that number confirmed. Does the 4.5 give enough room at the quarter lip?

You can run a 15x8 wheel w/4.75" backspace w/o any problems. With a 15" wheel,5.5" backspacing is the limit before shock clearance problems occur. A larger diameter wheel allows more backspacing.
All the above is assuming the stock width rear is still in the car.

You will have to roll the fender lips and the lower portion of the shock will be very close to the inside wheel lip. I ran stock Chevy Rally wheels with one inch extra back space and they barely fit my 67. I went and measured my wheels for you and they look to be 4.25" on back spacing. I think you can go to 4.5" before you will hit the shock. The exhaust pipe would rub on my car in a hard turn. I ended changing to 275/60's and was happier with the fit and look. Here is a pic of mine with 295/50's on the rear and 245/60's on the front. Good Luck :cool:

Chris,are you sure your rear end is a stock width 67 unit? Your numbers just don't compute. I can understand a 15x8 wheel w/4.25" backspacing and a 295 tire maybe having clearance concerns but that same wheel with at least 4.5" backspacing should not have a problem,,UNLESS you have a 68-72 rear. However,a 68-72 rear is wider so your wheels should be a long way from touching the shock mounts.

Chris,are you sure your rear end is a stock width 67 unit? Your numbers just don't compute. I can understand a 15x8 wheel w/4.25" backspacing and a 295 tire maybe having clearance concerns but that same wheel with at least 4.5" backspacing should not have a problem,,UNLESS you have a 68-72 rear. However,a 68-72 rear is wider so your wheels should be a long way from touching the shock mounts.

Clint,

Long time no hear from ya Bro. I have a stock 67 12-bolt that I was running in the car. My measurement wasn't exact, it could have been 4.5" back spacing. I ordered the same wheels Jeff Smith was running on his 66 Chevelle from an article in Car Craft magazine. But I know when I had the Rallys and 295's on the car it was tight.

Call me some time. :D

I went on American Racings website and the Torque Thrust II's come in 4.5" backspacing, 15x8 wheel. I didn't see a 15x8 with 4.75, hopefully the 4.5 will be enough.

Clint,
Long time no hear from ya Bro. I have a stock 67 12-bolt that I was running in the car. My measurement wasn't exact, it could have been 4.5" back spacing. I ordered the same wheels Jeff Smith was running on his 66 Chevelle from an article in Car Craft magazine. But I know when I had the Rallys and 295's on the car it was tight.

Call me some time. :D

It has been a while,hasn't it,Chris? We've got a lot to catch up on.
Will give you a shout soon.

Ive hear also 4.5-4.75 is optimal for the 15x8/295 combo.

Motorhead, any other rubbing issues?

What size wheel/backspace did you use on the front?