Tires Hit Rims - Team Camaro Tech
Wheels & Tires What fits what?

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post #1 of 26 (permalink) Old May 30th, 16, 09:28 PM Thread Starter
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Tires Hit Rims

'67 six cylinder, no A/C.

Long story short, 1.5 years ago I put in new front springs which lifted the front 1.25" above the rear (too strong). Today I put my original front springs back in. They're very mushy. Drivers side sits slightly lower than passenger side. I've learned that the front Springs should be matched to the rear. Should do an all around set. I'm going to pay to have that done.

Drove it around the block with control arm bolts loose. Front tires hit the fender on bumps. Tightened up the bolts and it happens only when hitting a pronounced bump.

Have a thread going for the saga of my messup on springs going in the suspension arena.

Here's the stats on the wheels. What do you think? How far off am I and how do I figure out how much backspace I need?

BF GoodrichP225/60R-15 front P235/60R-15 rear
ARH VN515 TorqThrust II 1 piece Polished Aluminum

15x7 3.75" backspace front
15.8 4.5" backspace rear

Thanks!

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post #2 of 26 (permalink) Old May 31st, 16, 08:18 PM
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Your rear backspace looks right, but your front back space should be like the back... 4.5". Are the tires contacting the fender lip ? More back space will move your wheels inward. Look at the thread that is a "sticky" in this section "67 wheel and tire combo's".

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post #3 of 26 (permalink) Old Jun 1st, 16, 05:54 AM
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Re: Tires Hit Rims

Have you had the front end aligned? When the camber is adjusted it might draw in the top of the tires. Do the tires now look vertical when looking from the front of the car or do you notice a leaning in or out?

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post #4 of 26 (permalink) Old Jun 1st, 16, 05:59 AM
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Re: Tires Hit Rims

Quote:
Originally Posted by TJS69 View Post
Your rear backspace looks right, but your front back space should be like the back... 4.5". Are the tires contacting the fender lip ? More back space will move your wheels inward. Look at the thread that is a "sticky" in this section "67 wheel and tire combo's".
x2 Very simple.

Don
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Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #5 of 26 (permalink) Old Jun 11th, 16, 10:12 AM Thread Starter
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I looked through the pictures of 67 wheels posted. I then put all the wheels and tires into a spreadsheet (gotta love excel) in an attempt to determine a backspacing that would work well. Nine postings had enough information. The two critical measurements would be the mounting hub to the outside of the tire for fender clearance and mounting to the inside of tire for rubbing on frame while turning. We'll, inside turning also needs full diameter, but I didn't go that far.

What I found was my tires stick out further than anybody else's, 4.18". The minimum is 3.63". Another car with same wheels, but shorter tires is 3.93" with a 4" BS. I have to get a good measurement on the car, but 4" or 4.25" look about right.

Note the rear wheels look right on part with the others.
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post #6 of 26 (permalink) Old Jun 13th, 16, 09:35 PM Thread Starter
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Re: Tires Hit Rims

Hi, I've got a picture of my wheels.

#1 shows the wheel along the length of the car.
#2 shows the damage done to the metal strip under the fender. Thankfully the fender didn't buckle.
#3 shows the damage where the tire was rubbing.

On #3, the rub is in more than 1/2" from the edge of the tire. the wheel probably moves in a little bit when it hits a big bump.

But geez, others seem to have good experience with 4" backspacing (mine is 3.75"). If I change it to 4.25" backspacing and give it another 1/2", is it going to still hit? Should I go to 4.5" backspacing?

When I rebuilt the front end and installed a Right Stuff kit, they said the new spindles that came with it were from (I think) a 1969 Chevelle. I remember checking to be certain everything looked lined up, but could I have been wrong and the new spindles are different than the old?
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post #7 of 26 (permalink) Old Jun 14th, 16, 07:50 AM
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Re: Tires Hit Rims

Couple things you can try:

1) button-head bolts in the inner fender.

2) persuasion with a hammer.

3) stiffer springs

4) new shocks.

5) proper alignment with a bit more camber.

I did 1, 2, 4 and 5 on mine. Rubbing has stopped.

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post #8 of 26 (permalink) Old Jun 14th, 16, 09:58 PM Thread Starter
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Quote:
Originally Posted by Gbauer View Post
Couple things you can try:

1) button-head bolts in the inner fender.

2) persuasion with a hammer.

3) stiffer springs

4) new shocks.

5) proper alignment with a bit more camber.

I did 1, 2, 4 and 5 on mine. Rubbing has stopped.
Hey Gbauer, what size tires, wheels, backspacing do you have? What Springs did you buy?

Thanks!
Mark
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post #9 of 26 (permalink) Old Jun 15th, 16, 01:15 AM
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Re: Tires Hit Rims

I think you should be fine with 4.25" BS....If that doesn't eliminate all rubbing, then go with George's remedies, #3,4,5.

  • '68 RS, AA, 749, L30, M(uncie)20 (originally a 3spd), 15yr backburner resto........
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post #10 of 26 (permalink) Old Jun 16th, 16, 07:24 AM Thread Starter
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Originally Posted by Garfields Maro View Post
I think you should be fine with 4.25" BS....If that doesn't eliminate all rubbing, then go with George's remedies, #3,4,5.
Great. What's your opinion on 4.5". There's plenty of room on the inside so the tire won't rubenstein on turns. It seems cosmetic, anything else to worry about? Look okay?

Thanks!
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post #11 of 26 (permalink) Old Jun 16th, 16, 03:05 PM
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Re: Tires Hit Rims

I'm not sure on that...think it would be ok. I have 15x7, 4.25 BS (factory GM rally wheel)with 215/65's, stock suspension and no rubbing at all. The 215/65 is slightly taller and narrower than the 225/60. These are the most popular sizes on the front of a 67/8 and yours is the first time I've heard of any rubbing, but obviously it's because of the wheel BS.

  • '68 RS, AA, 749, L30, M(uncie)20 (originally a 3spd), 15yr backburner resto........
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post #12 of 26 (permalink) Old Jun 16th, 16, 04:06 PM
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Re: Tires Hit Rims

What is your camber? Free fix to add a couple of shims and shoot for -.5 to-.75 degrees camber. It doesn't get any easier or cheaper....

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post #13 of 26 (permalink) Old Jun 17th, 16, 07:19 AM
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Re: Tires Hit Rims

Quote:
Originally Posted by mshaw67 View Post
Hey Gbauer, what size tires, wheels, backspacing do you have? What Springs did you buy?

Thanks!
Mark
Stock springs cut down 1 coil, 4.02" back space, 225/45-17

Sold:
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post #14 of 26 (permalink) Old Jun 18th, 16, 10:09 AM Thread Starter
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Re: Tires Hit Rims

Thanks for the replies. I'm trying to convince tirerack.com to help me out since they're the ones who recommended 3.75" BS. They say they put in lots of these without issue and that my springs are too soft (but they're stock!) and tires are wider than stock. Seems like a good company, cross your fingers that I can get some relief there.

The camber may not be correct since I had switched springs, but I think there's too much to take up and not hit.

Another cheaper and easier option is to go back to narrower tires (probably easier to sell old tires on craigslist). Original tires were 195/75r14. Full diameter of the tire is 25.5". I could do 195/60r15 or 205/60r15 (only options available for these tires). The full tire diameter would be 24.2" and 24.7". Would 195 or 205 be okay on a 7" wheel?

Thanks!

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post #15 of 26 (permalink) Old Jun 18th, 16, 07:50 PM Thread Starter
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Re: Tires Hit Rims

My answer was on the BF Goodrich website. 195/60r15 can go on wheels 5.5"-7". 205/60r15 can go on 5.5"-7.5" wheels.

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