Help! (Wheel and tire advise)

[Starry Jeep]

Okay so I'm going to put 31x10.5 on my truck. So I need "15 wheels.
Do I need 15x7 or 15x8?

[Mudderoy]

Okay so I'm going to put 31x10.5 on my truck. So I need "15 wheels.
Do I need 15x7 or 15x8?

Either is fine. If you have to buy wheels get the 15x8. I run 15x10 on mine.

[Starry Jeep]

:smiley-scared002:Well I'm about to buy some from a guy for $50. I just want to make sure if they are 15x7 they will fit. >.<

[Mudderoy]

:smiley-scared002:Well I'm about to buy some from a guy for $50. I just want to make sure if they are 15x7 they will fit. >.<

I was told by NTB that I could have put my 32x11.5x15 tires on my factory 15x7 wheels.

15x8 are the more traditional size wheels. 15x7 are factory sized wheels. Offer him $40 lol

[xj4life2]

keep in mind that running a 10.5 wide tire on a 7" rim is squeezing it quite a bit, in fact here in Ca most places wont even do it. Can cause issues and side wall weakness. I would recomend you go with a minimum of an 8" wide rim.

[Starry Jeep]

Okay! Will do. Thanks for the advice. Man. Where has this forum been all my XJ's life. lol

[Starry Jeep]

Can I fit 32x11.5 's on my 3" lift? I don't think I can..

[Mudderoy]

Can I fit 32x11.5 's on my 3" lift? I don't think I can..

I put 32x11.5x15 on my Jeep after installing a 4.5" Rough County lift. After the first couple of weeks I trimmed some of the plastic so the mudders wouldn't pop on the plastic.

So I'd say no you could not run 32's without trimming the fenders.

[4.3LXJ]

31s are the best you can do with a 3" lift without trimming. If you use stock wheels, it works very well.

[drakan1908]

This is what a 31x10.50x15 on a 15x7 wheel looks like

http://i219.photobucket.com/albums/cc250/drakan1908/Mobile%20Uploads/downsized_0714001452.jpg

http://i219.photobucket.com/albums/cc250/drakan1908/Mobile%20Uploads/downsized_0403001619.jpg

[xj4life2]

He can't cut he's a Grand , ok well he can but its tough however judgeing from the picture 32's might work but would be tight.
PS Grands do have a larger wheel well than the XJ

[NickM]

keep in mind that running a 10.5 wide tire on a 7" rim is squeezing it quite a bit, in fact here in Ca most places wont even do it. Can cause issues and side wall weakness. I would recomend you go with a minimum of an 8" wide rim.

I've had a legit tire shop (Les Schwab) put 12.50x33's on a factory 15x7 before...drove fine, but a heavy rig would not like a combo like that.

Nick

[drakan1908]

He can't cut he's a Grand , ok well he can but its tough however judgeing from the picture 32's might work but would be tight.
PS Grands do have a larger wheel well than the XJ

That is with 3 inches of lift . I have a 4.5 inch lift going on after I recover from the foot surgery I had. I'm looking at putting a set of these on 35x12.50x15 :shocker:


http://i219.photobucket.com/albums/cc250/drakan1908/Mobile%20Uploads/0623001843aTre.jpg




HAHAHA not really. :rotfl2:I am going with 33x10.50x15 on the rims I have. I took this tire for a friend and had it fixed for him while he was trying to get ready to go to the Scrambler Nationals a few weeks ago. I couldn't resist checking them out. There is a guy in the club that has 35s on his Grand but he has 5.5 inches of lift.

[xj4life2]

I've had a legit tire shop (Les Schwab) put 12.50x33's on a factory 15x7 before...drove fine, but a heavy rig would not like a combo like that.

Nick

mabey so but not around here thats for sure and I would never even think about it personally or at the shop . Thats a liability right there and besides I like my customers, don't need to see them get hurt

[4.3LXJ]

My rule of thumb has always been that the rim needs to be the same width as the tread. Granted wide tires have been put on narrow rims for various reasons such as bead protection, and bead stability. But the tires do not perform well on the highway and wear the center out of the tire quickly. My personal opinion is that they get less traction off road as well. Maximum traction will be obtained with a rim that is too wide rather than too narrow.

[Starry Jeep]

This is what a 31x10.50x15 on a 15x7 wheel looks like


Wow! Thanks for the pics!!! That really helps! I bought them anyways. I have a feeling they are 15x8. When i measure from side to side I get 8" and I get 7.5" from the inner walls. So I think that means that they are 8". :smiley-gen165:

[Starry Jeep]

Oops.. =P

[rockrash4x4]

My rule of thumb has always been that the rim needs to be the same width as the tread. Granted wide tires have been put on narrow rims for various reasons such as bead protection, and bead stability. But the tires do not perform well on the highway and wear the center out of the tire quickly. My personal opinion is that they get less traction off road as well. Maximum traction will be obtained with a rim that is too wide rather than too narrow.

your rule of thumb works fine for a pavement pounding mall crawler,
but throw in low air presures, a little dirt and some presure on the side wall and your asking to lose a bead

we run and reccomend a 8" wide rim on all but the widest tire if the rig will be used much off road, i also believe maximum traction will come only at the lowest air presures i.e. less than 5psi<----kinda beadlock area, but most 12.50 wide tires will hold thier bead fine on a 8" wide rim at 9-10psi and traction will be superior