backspacing

Lustle said
With my calculations on my 72 scamp. I should be able to JUST run a 255 on a 15x8 with 4.75 backspacing. That is assuming 11 inch between spring and out wheel well inner lip. A 15x8 with 4.75 just centres the wheel in the well. The tire's I am after measure a 10.2 section width with 7.5 inch rim. Running the 8's should decrease that a hair.

That said. Before I get 255's mounted. I am going to go under, re-measure. And do the math. With your measurements. Like others mentioned. I would suggest the spring kit and maybe rolling fenders. If you are ok with that.

Measure twice, cut once! :D

Definitely make sure you actually have 11", and check both sides. I have 11" on one side and 11 1/8" on the other, and that's without any rolling or trimming. But maybe the assemblyline gods shined on my car. 245 seems to be the limit for a lot of the Darts/Scamps. Even with 11" from the quarter to the spring a 255 will be tight, stiffer springs and a rear sway bar would go a long way to keeping the tires off the body. With worn out stock springs and no rear bar it might not be enough.

twayne24365 said
Thanks fellas, my quarterblips are rolled as well

The quarter lips are rolled and there's still only 10 7/8"? Dang. You did not draw the good tire clearance card from the factory assembly line. Unless you offset the springs I would stay with a 245.