275/65r20 on stock rim

[mike552]

Ok guys, I believe I have narrowed it down. I found a aftermarket wheel I like. It is 20x9 with a +12 offset.

I am not planning to re-gear. Doing the math, it appears I can easily get away with a 285/60r20 (33.5” tire) but am exploring the possibility of a 305/55r20.

I’d rather go with the 305 but my feeling is that it will not clear the fenders and or may need more than the simple plastic fender liner/mudflap mod up front.
Any thoughts?

 

[TeCKis300]

You don't want +12 offset. That's not going to make fitment easier as it will cause the tire to swing in a wide arc. It's also not great from a suspension geometry POV and will invite odd handling behavior. Best to stay in the +25 to +50mm range, but this also does depend on overall tire diameter.

If there's a case for wider tires - better cornering traction, braking, keeps terrain off the wheel, stays on the wheel better when aired down, and may have softer ride characteristics.

 

[mike552]

Thanks for your input on this thread. It has been very helpful. Having said that, I am just not that concerned about running +12 offset. That is a mildly aggressive offset. I have tinkered with cars for well over 25 years now... Running a +12 is not something I will lose sleep over. I am concerned about stuffing the biggest size tire on that wheel given the current setup. I am looking for more meat on that 20 and a 305 would start getting close In sidewall height to what I would get on a 18.

 

[Bomar]

I run a 285/60/20 on OE wheel and zero issues.

 

[Bomar]

keep your OE wheels b/c with a +12 you will be swapping back very quickly.

 

[TeCKis300]

Thanks for your input on this thread. It has been very helpful. Having said that, I am just not that concerned about running +12 offset. That is a mildly aggressive offset. I have tinkered with cars for well over 25 years now... Running a +12 is not something I will lose sleep over. I am concerned about stuffing the biggest size tire on that wheel given the current setup. I am looking for more meat on that 20 and a 305 would start getting close In sidewall height to what I would get on a 18.

No problem. Just friendly help. You might be able to get away with +12 with 275s (which would still require cutting when it wouldn't be necessary otherwise), but that's not going to happen with 305s. For your reference, stock offset on the 200-series is a pretty high +60.

+12 offset if going to require significant cutting of the step and liner, and giving up the mud flap. May also require a body mount chop, which shouldn't be necessary until 35s. May also contact the fender when stuffing tire.

I've run 305/55R20s for awhile. Running 35x12.5s now. This is 305/55R20 +35 if it gives you a point of reference.

 

[mike552]

^^^It sure as hell does! Thanks!