Ladies

I have a 3.5" lift and am unsure whether to get 30's or 31's. I sold my pair of 31's. The majority of my driving is on-road and would like to save gas with the 30's, my only concern is that they will look awkwardly small on the jeep.. Which is better for me??
Looking for:

1. Appearence
2. Gas Mileage
3. Power/Acceleration
4. Off-Road Capability

Already have a/t tires picked out so just looking for a suggestion on size.

White Elephant

31s will boost appearance
not sure about mileage difference but probably 30s are better
30s will probably help power/accel but not by much
31s will be better for offroad

BlakeDGKleavitt

Wish I had 31.
3" on 30 s

EvilBlackXJ

Go with the 31's.

Ladies

Okay I think I'll go that route then. Will 31's fit on stock rims though? I thought they wouldn't and I won't be able to afford rims for a while.. I was thinking about getting the general grabber at2 because they have a 29.7" diameter where normal "30's" are only 29.3" and 31's are 30.5".. Thoughts?

JRenteria09

Yea I have a simliar question. ^^^^^ I have 31x10.5x15 tires. Am about to order some Soft 8s. Do I order the 15x8 or 15x10 Soft 8s?

VTJeep

You CAN put a 15" wide tire on a 7" (stock) rim. Not that it's the best idea.. I wouldn't get anything more that a 15x8 unless your running a 10.50 tire. A 235/75 is like 9.00-9.50 I think, so a 10" rim would be to wide. And get the 31's over the 30's it will net you slightly better results on the trail. It's up to you if you want a 9.50 or 10.00 width. But either way stock rims will work. You can also regear, but it's not the cheapest upgrade and for 31's you really don't need to.

VTJeep

You can get the 15x10 rim. Ultimately it gives you the opportunity to go to a bigger tire if you want... But not a smaller tire...

93gc40

Having had BOTH at the same time. I can tell you performance, MPG and ride wise there is no real difference between 30 and 31 tires. 30" is just a little cheaper.

EvilBlackXJ

Agree. And you can mount either on the factory rims, or any aftermarket 15 x 7 wheel.

Budget93xj

Sorry Douple Post

Budget93xj

I'm pretty sure 31x10.5 tires on factory rims will rub on the control arms under full lock.

If it was my jeep i would go with the 31x10.5 in bfg ATs or km2s on cheap steel whells from summit with proper backspacing, btw BFG is running a $50 mail in rebate right now.

Ladies

What is the disadvantage of running a 7" rim and 10.50" wide tire? Lighter, cheaper, and from what I have read it is safer to air down..
I am only looking to run the stock rims temporarily until I get new rims at christmas time. I don't do too much turning at full lock but then again I don't want to tear apart my brand new tires either!

93gc40

With a stock wheel whether 7" or 8", you might need to adjust the steering stops about 1/16-1/8" to keep the tires from rubbing On the lower control arms. 7" rim OK for a 31" tire, might slip the bead if you air down below 20#.

Ladies

How do you adjust the steering stops??