E-Body Tire Combos

[Kevin71]

Whats the most backspace you can put on the front wheels.  I can't seem to get a 17x8 rim much inside the fender well.

[HP2]

I've had 4.75 backspace on a 15" rim, and that is as close as I could go to the upper ball joint. In a 17", you may be able to get away with 5", bu tI'm not sure.

See what Mike used; http://www.cuda-challenger.com/cc/index.php?topic=42140.0

[cudazappa]

I am running a little over 5" backspace right now on 17x9 rims on the front.  On 17x8s 4.5" worked fine, except on hard turns at full lock and suspension movement (rubbed at the very top).  So both combos rarely rubbed.  I'm going to increase the backspace in the front when I go to 13.1" rotors in the front.

[Kevin71]

I have SSBC disc on the front and was told by Coy wheels that the add about a inch over the drums.  I have 17x8 4.5 back space.  Have about 1/2 inch before it hits the upper A arm.  The car has to be raised a least a inch above the wheel to prevent it from rubbing when you turn the wheel.  I tried a torq thrust m with 5.62 inch of back space it hits the upper A arm.  Added 1/2 spacer and still hits the A arm.  So I am going to try a 17x7 with 4.5 inch of back space and see if I can get the front down a little.  I am running 17/45/235s on the front.

[cowboy]

-
I go 17 - 7 in front, 4,5" BS - and rub fenders..??

[Kevin71]

I have just got a set of Coy's 18/9.5 for the rear with 5.5" of back space.  I was thinking of putting a 275/55/18 on them which would be right at 31" tall.  Would these be to tall.  I wanted to get the rear end to sit a little higher.  I hope to get all of this put together within the next week and get some pics posted.  I think the taller tires would fill the fender wells good.

[inviolet]

I have just got a set of Coy's 18/9.5 for the rear with 5.5" of back space.  I was thinking of putting a 275/55/18 on them which would be right at 31" tall.  Would these be to tall.  I wanted to get the rear end to sit a little higher.  I hope to get all of this put together within the next week and get some pics posted.  I think the taller tires would fill the fender wells good.

You might want to run a 31' Tall tire through this calculator with your trany/rear and see how it effects performance before you buy anything.


http://www.americantorque.com/graph-rpm-vs-speed/

[Kevin71]

I've got 391 gears in the rear end

[inviolet]

I've got 391 gears in the rear end

That will roughly give you 3,000 rpm at 70 mph with a 31' Tall tire and a 3 speed Trany.

[Kevin71]

I have a 5 speed tremec.  I think I better go with a shorter tire.  Just make life a little simpler.

[inviolet]

I have a 5 speed tremec.  I think I better go with a shorter tire.  Just make life a little simpler.

Yes defiantly. I have a TKO 500 with 3.55's and 26' tall tire. About 2200 rpm at 70 mph. It's hard to find a happy medium.

[solarguy]

a taller tire will give you LOWER RPM's at the same MPH

[Kevin71]

It's hard to find a tire that fits a 18 inch rim that is say 28-29 inch tall that's not a SUV tire.  I want to stay with about 9.5-11 inches wide in tread.  Also don't want to spend $400. for a tire.  I am sure you can understand.

[GoodysGotaCuda]

It's hard to find a tire that fits a 18 inch rim that is say 28-29 inch tall that's not a SUV tire.  I want to stay with about 9.5-11 inches wide in tread.  Also don't want to spend $400. for a tire.  I am sure you can understand.

my 295/45/18 nittos are 28.5" tall, 11.6" wide and $200 a tire..

[boydsdodge]

I want to run the AVON CR6zz tires 245/60/15 and 275/55/15 on my superlites or minilites.