Question on tire size

[85PTCutty]

I have a Olds and want to go with 18's what tire sive do I run?

[fast Ed]

Olds what? Year, model, wheel width, lowered or stock ride height?

Help us help you.



cheers
Ed N.

[85PTCutty]

Sorry, 1985 Olds Cutlass Supreme, lowered with Eibach's Pro coils. Don't know about width, maybe 18x8's on front and 18x9.5's on the rear. How wide can I go on the rear? What backspacing do I use? I'm new to the Pro Touring and love the look.

[jackfrost]

the rear wheel wells of an Olds are pretty small. the biggest I've seen is a 255 tire, but I've heard of someone getting a 275 to fit w/ the perfect backspacing. the Monte and Regal wells are bigger.

if you go that big, make sure the body is centered on the frame. sometimes it can be off 1/2" or more, which will screw up your backspacing from side-to-side.

[85PTCutty]

changed my mind I going with 17's if I run a 17x8 with 4" of backspacing will I be ok?

[jackfrost]

i believe stock BS is 4 1/2", so it'd work, but might look weird.