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Mini tub

Reply #15 –
No, however I have owned both. My particular 275/60's on stock 10 holes pretty much only rubbed with a bunch of tools (300+lbs) and going over an angled driveway on my 87 with no mods at all. On my 86 I had to zip tie the ebrakecables to keep from rubbing the sidewall and with the same amount of tools in the trunk they would always rub. Actually, even with an empty trunk and either my dad (265ish lbs) or brother(200+lbs) in the back seat they would rub on normal freeway cruises.

I have both a 86 and 88xr7 here if you want a particular measurement. It is not a huge difference between the two, but the 87-88's are definitely a bit more roomy.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

Mini tub

Reply #16 –
Glad I just saw this. My '88 has 15x8 Weld wheels that look to have 4.5'' back space with a generic 275/60-15 tire. all my other cars are 5 lug, so I can't swap tire wheel combos to compare. When the shorter Mustang rear went in it tucked the tire further under the car, and I think it looked better before. A friend loaned me a set of 15 x 10  Weld wheels with a 6.5 backspace, but when I put them up under there with no tires it doesn't look like it will help my cause. Was hoping maybe a 295 or 325 would work with this 15 x 10 rim. I might still mount a tire and play with a spacer just to see how it goes.
1988 LX, 306 with GT40P heads, Downs Upper Intake on Truck Lower, Powerdyne Supercharger and T5 swap.  Scavenger Hunt Build at it's best.

Mini tub

Reply #17 –
Just need to swap the mustang axle shafts for the 88 t-bird axle shafts to put the wheel back where it was.
A friend has 15x10 w/ 6.5 backspace and 275/60/15 drag radial on his 88 TC. He had to trim and roll the fender lip but it fits and looks good.
TC#1- 2.5T- 10.14@134....9.76@138 with a 50shot
TC#2- Turbo BBF project
TC#3- parts car

Mini tub

Reply #18 –
Here is an 87-88 with a 325/50/15. Not sure on the wheel size though.
TC#1- 2.5T- 10.14@134....9.76@138 with a 50shot
TC#2- Turbo BBF project
TC#3- parts car

Mini tub

Reply #19 –
that looks great. MT has a 295/50 that is an inch narrower than the 325, but still larger than the 275/60 I have used. might be a good compromise.
1988 LX, 306 with GT40P heads, Downs Upper Intake on Truck Lower, Powerdyne Supercharger and T5 swap.  Scavenger Hunt Build at it's best.
 

Mini tub

Reply #20 –
It's looking like mini it is...I already have built rear...33 spline and a wave track.  If I recall it's mustang lenght..been on the shelf a while.
I'm gonna do a double bead lock. ..can't go past 4.5 backspace.
Worst case I'll shorten up the rear.
Thanks guys