djdodge

(I posted this in the "suspension" forum also, but it seems there are more people in here, and since it's related to an R/T I hope it's OK to re-post)


I bought the 18" Mopar wheels as seen here: Mopar Wheel

I'm trying to find the biggest tire (both wide and tall) that I can put on this rim and still fit it on my R/T without any interference. I noticed today that the standard 20" wheels with the 245/45 tires is extremely tight to the suspension components.

Anyone know what tire size might work?

Thanks.

-Dave, Seattle

p.s. I've never lowered one of my vehicles, but it seems these Challengers are ripe for doing so. They have a very high stance, and it would be nice to bring it down a little.

blackblurr

We need to know the width as well as the rim diameter. Are they 8's or 8.5's? You can only safely go so wide based on the rim width. Just a guess would be 255-55-R18's would be the biggest. You will definately have to take some measurements in the wheel well.

djdodge

Sorry about that. They are 7 1/2" wide.

Even if I take measurements, it's hard to tell exactly what will work without throwing a wheel on. I was hoping someone else may have done some experimenting.

-Dave

djdodge

Forget it. I just did some checking, and there aren't even that many tire options available for 18" rims. Must be why Dodge chose the 235/55s.

There are a lot more options for a 17" rim. Darn.

-Dave

tskatz

The widith is 8.5.

Riptide

The stock tire on the 18" package'd R/T is a 235/55/R18?

djdodge

Yes, I believe so. I got it from the Tire Rack website which was correct about the 20" tire, so I assume they are correct about the 18. Their site is pretty cool. Lots of info, and if you are shopping for wheels, they have a link where you can see each wheel on a Challenger picture, and you can even change colors for the car. I don't like any of their wheels, but still a cool feature.

-Dave