Wheel Size and Backspace

[cwareham]

Hi folks-

Planning on going narrow-width rear end to fit Torq Thrust D's on a 5 lug (non-pindrive) setup.

Does someone have the rim width and backspacing measurements for a 15" Torq Thrust D wheel for a 289 car?

I've got my eye on these:

Rear:
http://store.summitracing.com/egnsea...=KeywordSearch
(Wheel, Torq-Thrust D, Aluminum, Gray, 15 in. x 10 in., 5 x 4.75 in. Bolt Circle, 3.75 in. Backspace)



Front:
http://store.summitracing.com/egnsea...=KeywordSearch
(Wheel, Torq-Thrust D, Aluminum, Gray, 15 in. x 8.5 in., 5 x 4.75 in. Bolt Circle, 3.75 in. Backspace)
or
http://store.summitracing.com/egnsea...=KeywordSearch
(American Racing Torq-Thrust D Wheels
Wheel, Torq-Thrust D, Aluminum, Gray, 15 in. x 7 in., 5 x 4.75 in. Bolt Circle, 3.75 in. Backspace)

Thanks in advance!
Chris

[weaver]

Chris, we are doing some measuring and should have some answers for you soon.

Alan

[cwareham]

Aweseome...thanks Alan.

chris

[cwareham]

Thanks for the help Alan....

Folks-

What are you running for tire size on your FIA cars? Is anyone running a 295-50-15 on 10" rim in the rear? What are you running on the front?

thanks,
Chris

[weaver]

I don't know of anyone running those size wheels and tires on the rear of a FIA, that is what we use on a 427 car with much wider wheel wells.

Alan

[cwareham]

Thanks Alan, that's a big help...knowing that the wells on the 427 are bigger helps as I look through other people's setups.

Are there any folks out there comfortably running 275 60-15's on 8.5" rims on an FIA rear or am I looking for smaller? I'm not trying to jam the biggest that will fit, I'm looking for what will fit with a pretty easy margin.

Thanks!
Chris