31x10.5x15 Tires what rims will work?

[XEON]

I can possibly get a set of practically brand new 31x10.5x15 tires. I am wondering what rim I would have to get. Like a 15x8 or something and what backspacing. I have a YJ and I want to possibly keep it under my stock flares. Please let me know! :D

[bondo303]

I had my 31x10.50 on my stock steel wheels. They were 15x7 and I think the BS is 5.5". I now have black steel wheels. 15x8 with 4" bs. I think that would be a great setup. I have this on my TJ but I think it would be good for a YJ too.

[sentinal02]

yup, the stock wheels will work with the 10.5" tire, but something with a little less back spacing will keep things from rubbing at full lock or flex. I'm running 10.5" on my 15x8 cragars and have had no problem with rubbing. i wouldn't recommend 15x10's though unless you plan on running a 12.5" tire or wider in the foreseeable future.

[DaMoose]

yeah, anything 15x8 or 15x7 will work fine. I had a set of stockers running my 31x10.50 and also my 33x10.50. They worked fine. The only thing to watch out for, like noted above, would be the backspacing. With the stock rims and those tires, I need to use a few washers to adjust the steering stops so I didn't rub at full turn.

[XEON]

Also will I have to adjust my speedo? With 31s? Thanks!

[sentinal02]

Also will I have to adjust my speedo? With 31s? Thanks!

assuming your jeep is set for stock 215/75-15's (most jeeps used this tire from the factory) then your speedo will be 11% on the low side. which means when it reads 60 mph you'll be doing 67. and at 70, you'll be doing just shy of 80 mph. whether or not you can live with being off that far or not is up to you. just remember to take it into consideration if you rely on your milage rather than your gas gauge to tell you when to fill up. to change it, i'm calculating a 35 tooth gear, but this site:

http://www.raingler.com/jeepReference/speedoChart.html

is showing a 38 tooth supposedly verified. the problem though is there isn't a any gear listed in the dealers part list from 36-38 teeth for the early model YJ's (mechanical speedo) you should have a 39 or 40 tooth gear in there now. up to you if you want to go to the 35 tooth, which should get you closer and will let you go bigging in tire side if it's not dead on. up to you.

[XEON]

Maybe I will get some steelys and just use the tires for offroad. Then use my 265s that are installed for road use. I think it will work out...

[bmxpunk1369]

dont get two sets of tires, i did that for about a week and I went crazy. Unless you have a pit crew 24/7 it gets old fast. Either you wont wheel or youll ride everywhere on muds. Just get mud tires and suck up the vibration and the hum. Dont settle for an AT that will let you down when your in the NJ mud/sand. Just look around for used rockcrawler wheels. Even if they come with bald tires and have rock rash, rip the tires off and spray em down with some rustoleom or bedliner. For the money you save its better when the wheel smashes into a rock and you can spend the rest of the day laughing over how it cost you 10 bucks for it instead of 50 brand new.

[bmxpunk1369]

dont get two sets of tires, i did that for about a week and I went crazy. Unless you have a pit crew 24/7 it gets old fast. Either you wont wheel or youll ride everywhere on muds. Just get mud tires and suck up the vibration and the hum. Dont settle for an AT that will let you down when your in the NJ mud/sand. Just look around for used rockcrawler wheels. Even if they come with bald tires and have rock rash, rip the tires off and spray em down with some rustoleom or bedliner. For the money you save its better when the wheel smashes into a rock and you can spend the rest of the day laughing over how it cost you 10 bucks for it instead of 50 brand new.

[sentinal02]

i kinda disagree. 2 sets of tires isn't that bad. been running mine that way for about 6 months and have yet to get disappointed with it. only takes half an hour to change mine. but then, around here there's really no place to go wheeling at the spur of the moment so i've always got the advanced notice to change them when i know i'm going out. if you wheel more often or there's a chance that a buddy will call you sat morning and ask if you wanna tag along, then i can see it getting frustrating. been running my thornbirds since the first snowfall though. on a side note, i really can't see why people complain about them so much. only been stuck with them once and in the snow i've fishtailed once (full 180°). the stuck i suspect was more lack of momentum and a bad line through the mud than the tires, and the fishtail was a direct result of losing 4wd. Deep grooves and sipes definitely helped though :D

[XEON]

Meh forget it I dont have the money for the tires anyway... plus they are a rip off :)