they are 275/35-20.. what do you guys think i should have on these for the back. its a 20 inch rim

 

Front and back?
Staggared fitment?
Cant sec a tire unless you know the width and offset of the rim...
Not a fortune teller here.....
No ESP on my part....

275/25.4x.30x2+20x3.14=83.19763

63360/83.19763=761.5 revs per mile
those tires are smaller than OEM, thats
why the gap is so big round the fenderwells...

 

Your math is incorrect?

275/35 20s are actually larger in diameter than stock (.35 not .30)

275/25.4x.35x2+20x3.14=86.64117

63360/86.64117=731.2 revs per mile

To the original poster, my Roush rear springs only dropped the rear of my car approx. .8 in, but it looks much better now.

 

Rear rims are 20/9.5 and the tire is 275/35-20s.. sorry for not telling you guys that and to all the guys that like the roush rears thanks for letting me know..

 

Thanks doogie65 just ordered a set from carparts.com 108 shipped.. thanks again man