Drums vs disk rim ? - Team Camaro Tech
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post #1 of 12 (permalink) Old May 26th, 11, 03:15 PM Thread Starter
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Drums vs disk rim ?

Guys,

When buying rims, say old rally rim style. Does it matter if you have disk brakes in the fronts and drums in the rear. Is there a differnce when buying these old school rally rims to match up with this drum disk combo ?

Thanks


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post #2 of 12 (permalink) Old May 26th, 11, 03:42 PM
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Re: Drums vs disk rim ?

From what i have found you need 15" rims for the rotor/ drum wheel, 14" will only work for the drum style brakes. due to clearance issues.

I had a set of 15" rally rims 10" wide with 4 1/4 offset rear and 15" x 8" wide for front.

its all in the look you want.





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post #3 of 12 (permalink) Old May 26th, 11, 04:04 PM
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Re: Drums vs disk rim ?

Quote:
Originally Posted by bwcamaro68 View Post
From what i have found you need 15" rims for the rotor/ drum wheel, 14" will only work for the drum style brakes. due to clearance issues.

I had a set of 15" rally rims 10" wide with 4 1/4 offset rear and 15" x 8" wide for front.

its all in the look you want.




If that is true, How come only Z's had 15" wheels, SS had disc brakes, so did 6 cylinder cars,????
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post #4 of 12 (permalink) Old May 26th, 11, 04:23 PM
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Re: Drums vs disk rim ?

There are 14" factory wheels that will fit over factory front disc's.

...Dennis

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post #5 of 12 (permalink) Old May 27th, 11, 06:19 AM
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Re: Drums vs disk rim ?

Look at all the cars with dog dish hub caps and 14" wheels like the copo's. I spent a few days sorting wheels before I found four that cleared my discs. but It can be done. If they fit over the discs they'll clear the drums just fine.

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post #6 of 12 (permalink) Old May 27th, 11, 09:19 AM
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post #7 of 12 (permalink) Old May 27th, 11, 09:24 AM
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Wink Re: Drums vs disk rim ?

It's more dependent on Rim Profile than rim size or wheel application identifier code

A 14" "JJ" profile rim will clear caliper - a "J" or "JK" profile rim will not ...

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post #8 of 12 (permalink) Old May 27th, 11, 11:13 AM Thread Starter
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Re: Drums vs disk rim ?

Quote:
Originally Posted by Vintage 68 View Post
It's more dependent on Rim Profile than rim size or wheel application identifier code

A 14" "JJ" profile rim will clear caliper - a "J" or "JK" profile rim will not ...
Now that is great news, because i have JJ code Rally rims. Now i just need the front ones to match, but they are 15x8 in size.


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Edelbrock Performer EPS Intake Manifold 27014

98 GMC Suburban / 454 V8 / K2500 4x4

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post #9 of 12 (permalink) Old May 27th, 11, 12:10 PM
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Re: Drums vs disk rim ?

Quote:
Originally Posted by Vintage 68 View Post
It's more dependent on Rim Profile than rim size or wheel application identifier code

A 14" "JJ" profile rim will clear caliper - a "J" or "JK" profile rim will not ...
The profile is obvious as to which ones fit a disc or not, no? Once you know what a disc wheel looks like your not apt to grab a drum rim by mistake. The ones I have it's clear. Don't the application codes have some relevance?

Last edited by Sauron67MM; May 27th, 11 at 04:49 PM. Reason: a,s
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post #10 of 12 (permalink) Old May 27th, 11, 01:32 PM
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Thumbs up Re: Drums vs disk rim ?

Quote:
Originally Posted by Sauron67MM View Post
... Once you know what a disc wheel looks like your not apt to grab a drum rim by mistake.
... Don't the application codes have some relevance?
I could place two(2) K.H. Rally rims next each other that "look" identical - but, one will clear a caliper and the other wouldn't
It's gets even tuffer for standard 'steel' rims
So you need to know the rim code to be sure.

The application code will give you the original size, offset, width and style as well as intended model use - but may not tell you if they could clear a caliper in some cases. Knowing the rim profile for that rim will allow you to judge that.
Rim profiles were also changed over the years for some common steel wheels to clear calipers as disc systems became more common.

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post #11 of 12 (permalink) Old May 27th, 11, 04:54 PM
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Re: Drums vs disk rim ?

Noted, thanks John.
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post #12 of 12 (permalink) Old May 27th, 11, 04:54 PM
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Re: Drums vs disk rim ?

I've accumulated 6 of the 14x7 JJ wheels and yes, they fit over disc brakes. Without looking (it's been awhile), I believe that they are all IC and they are the only wheel that is identical in every way to the much sought after and expensive XT wheel that I've found. They'll probably end up on epay eventually. The garage is getting crowded and the wife has mentioned a couple of times that it would be nice if she could get her car in.

Jim's '69
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Last edited by Fried Okra; May 27th, 11 at 05:05 PM.
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