Fox T-Bird/Cougar Forums

Technical => Body/Appearance/Interior => Topic started by: BobNorway on July 13, 2006, 04:21:26 AM

Title: Wheel Offset?
Post by: BobNorway on July 13, 2006, 04:21:26 AM
I'm looking to get some new rims.
I've found the bolt senter 41/4" but another key factor is the offset.
I can't find out what the factory offset was?
Title: Wheel Offset?
Post by: SLEEPER T-BIRD 87 on July 15, 2006, 12:55:10 AM
how wide of a wheel you want?


on a 8" wheel a 5.5 back space works well and will allow a 275/60/15 with no rub
Title: Wheel Offset?
Post by: DVP on July 15, 2006, 12:09:40 PM
what about a 9" wide? i want it to fill the rear well out.

but then its going to stick out in the front right.
Title: Wheel Offset?
Post by: SLEEPER T-BIRD 87 on July 15, 2006, 01:16:58 PM
Quote from: cougar86_89
what about a 9" wide? i want it to fill the rear well out.

but then its going to stick out in the front right.




a 9" will stick out on the front.


on the rear you can get away with a 9 w/ a 6.0  backspace
I had a 17x10.5 on the rear of mine and used the s95 offset wheels.
Title: Wheel Offset?
Post by: DVP on July 15, 2006, 01:57:56 PM
how did you fit 10.5s i want to ga wide in the back when i get money with the 03 cobras

and what size whell can i use in front so it wont stick out. i have ponies and the fit goodup front but the back look like they are hiding.

if i swich to a mark VII axle and have a long axle do you know what offset/backspacing i should use
Title: Wheel Offset?
Post by: Pressure cooked chicken on July 16, 2006, 12:53:01 PM
I have 96 mustang length rear axles and brake setup on the back of my drag 88TC. I'm thinking a 9" rim with 6" of backspace would be great but I can't seem to find weld prostars in that size. Closest I found was 5.5" backspace:dunno:
Title: Wheel Offset?
Post by: BobNorway on July 17, 2006, 09:19:52 AM
I'm looking for the original backspace value from Ford.
I have to document this if I change rims or it won't go through inspection.
I also have to keep the tire circumfrence within 5% of original.
215 70R14 can go to 225 60R15 or  245 50R16
I have an Excel speadsheet to calculate this if anyone needs it.
Title: Wheel Offset?
Post by: hpeve on August 10, 2007, 07:57:11 AM
Did you finaly get the answer to your q. BobNorway and did you get your car through inspection?
What wheels did you end up with?
I might be able to help if you still are in progress.