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Old 14th-September-2009, 04:12 PM   #1
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Mini-tubbing tire size?

I am curious to see if anybody has been successfully able to stuff a MT ET Street 325/50 - 15 with a mini-tub underneath the back of their car, with leaf springs. I have called several places and they do not know. I test-fitted the tire underneath the car with the leaf spring hanging loose, and it looked like it may rub, but the tire has yet to be mounted on the rim.

The section width is a bit smaller on the 325/50 than a 315/60 (approx. .4" according to summit) and should have a little better fit inside the wheel well. It is also 2" shorter, but obtains the same tread width.

I am hoping to see if I can take the cheaper way out and just move the leaf springs in/offset hangers and not have to 4-link it. Thanks for any help.
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Old 14th-September-2009, 04:43 PM   #2
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I sure as heck hope so . I'm in the middle of a minitub and the tire/wheel fits into the wheelwheel fine. I haven't tried the leaf yet. If it is too tight I'll try and offset the bushings in the front some by trimming one side and shimming the other to help move them over some.

John
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Old 14th-September-2009, 04:59 PM   #3
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Yea, I'm just trying to see if anybody has had to offset the front hangers any. If so, where would you find something like this?
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Old 14th-September-2009, 11:06 PM   #4
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No one? Anybody?
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Old 15th-September-2009, 12:45 AM   #5
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No offset fronts on mine. These fit on my 73......BFG G Force T/A Drag Radials P325-50R-15
Mounted once and used for 3 pass's , then installed the slicks.
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Old 15th-September-2009, 08:44 AM   #6
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No offset fronts on mine. These fit on my 73......BFG G Force T/A Drag Radials P325-50R-15
Mounted once and used for 3 pass's , then installed the slicks.
Are these them?

http://www.summitracing.com/parts/BFG-53931/
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Old 15th-September-2009, 11:37 AM   #7
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yes... But I didnt pay that MUCH for them...
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Old 15th-September-2009, 11:58 AM   #8
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yes... But I didnt pay that MUCH for them...
Do you mind me asking how much clearance you have in between your tire and the front of the leaf spring? Are your tires right up against the fender lip? Did you narrow your rear any?
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Old 15th-September-2009, 12:33 PM   #9
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yes the rear was narrowed during the mini tub. I never measured the clearance issues..

Here is an older pic that was taken right after we re did the suspension, with a wider tire, I now run on a 9 inch slick . We have since installed an Anti roll bar and relocated the shock again

Click the image to open in full size.
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Old 15th-September-2009, 01:53 PM   #10
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yes the rear was narrowed during the mini tub. I never measured the clearance issues..

Here is an older pic that was taken right after we re did the suspension, with a wider tire, I now run on a 9 inch slick . We have since installed an Anti roll bar and relocated the shock again

Click the image to open in full size.
Hmm, doesn't look like any kind of clearance issue at all. What is the tire size in this, the 325/50?
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Old 15th-September-2009, 02:37 PM   #11
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http://www.mandhtires.com/store.php?...on=show_detail

That tire was a M&H Racemaster N50-15
Tread Width: 11.0"
Section Width: 12.8"
Diameter: 28.2"
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Old 15th-September-2009, 03:22 PM   #12
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http://www.mandhtires.com/store.php?...on=show_detail

That tire was a M&H Racemaster N50-15
Tread Width: 11.0"
Section Width: 12.8"
Diameter: 28.2"
Awesome, thanks for the help johnh. Those are only .2" smaller in section width than mine. I'm really hoping my mockup was way off. I'd love to save about $2k on the suspension.

If you don't mind me asking, did you narrow the housing yourself?
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Old 15th-September-2009, 03:27 PM   #13
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No I did not. It was narrowed already when I purchaced the car.
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Old 15th-September-2009, 05:12 PM   #14
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No I did not. It was narrowed already when I purchaced the car.
Thanks again. One more question, what kind of shocks are you using? I was thinking of just using the shocks that I had before as they are fairly new, but am unsure of the rate, or anything else about them.
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Old 15th-September-2009, 05:34 PM   #15
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Those are Rancho's from Calvert racing. www.calvertracing.com

What are your plans with the car?
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