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Old 07-06-2012, 04:14 PM   #1
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Tire sizing questions

Hi,

I have a 2000 TJ Sport with 30x9.5x15 tires mounted on the factory Canyon wheels. I'm getting ready to get new tires for it and I'd like to get 31x10.5x15 tires.

I've asked various retailers if the tires would fit without issue and most recommended a small lift. On that note, I called a company that sells lifts and inquired about a 2inch lift kit and I asked if that would be sufficient to accommodate the tires without any other modifications.

They said even with the lift, the tires might still rub due to the backspacing on the factory rims. They suggested I get a lift & get rims with appropriate backspacing.

So now, I'm not sure what exactly what I need to do. If anyone here has suggestions, I'd appreciate it. I really don't want to spend the money to buy both a new set of rims & the suspension. If one or the other would be sufficient by itself I will do it.

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Old 07-06-2012, 04:24 PM   #2
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Those tires will fit on the stock rims. You will need to add a couple washers behind your steering stops to keep the tires from rubbing at full lock. Search and you'll find a write-up showing how to install the washers. A lift is not necessary.

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Old 07-06-2012, 04:26 PM   #3
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With the Canyons they may rub just a but when you turn all the way to full lock. However you can fix it by either not turning so sharp or by adjusting your steering stops to keep you from turning too sharp. The lift may help with rubbing your fender at full flex, but on the street you should be alright without. You can pick up a budget boost for pretty cheap if money is tight.
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Old 07-06-2012, 04:56 PM   #4
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I agree with the bb, and the new tire is only 1/2" bigger on the top and the bottomand 1/2 inch wider on both sides. When I bought my Jeep it had the most perfectly backspaced rims on it because it had 33s with no lift and it rubbed the swaybar at a full turn, that's it
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Old 07-06-2012, 08:59 PM   #5
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Thanks for the tips guys. Do you think wheel spacers or a change in wheels alone with proper backspacing would be sufficient? I wouldn't mind getting rid of the canyons.
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Old 07-06-2012, 09:24 PM   #6
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I also have a 2000 Sport with Canyons, and it had 31's on it when I bought it four years ago. I replaced them with another set of 31's, and I have never experienced any rubbing at all even though it is completely stock with no lift. I personally like the Canyons because the backspacing keeps the tires tucked nicely inside the flares, maybe sticking out a half-inch or so.
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Old 07-07-2012, 01:15 AM   #7
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Greetings from North Pole Alaska,
For what its worth, I spent a couple weeks on here and every other jeep forum reading threads about 31 10.5 15s on stock wranglers. The masses 99% all said the same thing, no problemo, except you might have to adjust your stop for full turn rub, depending on specific tire, with stock jeep rims.
I just ordered 4 Goodyear Wrangler Duratracs in the above size, as well as 4 cragar soft 8 black rims, 15x8 for my 97 wrangler sahara. I hate the stock rims, and my rig in 99% black so i want black rims as well. I picked those rims from the input i read on many of the posts from people using them and being very happy with them. Im sure there's folks out there that think otherwise, but that was the consensus my research came up with. Ordered them off of Amazon, they will be here next week, free shipping.
Again, this is what Im doing based on what I read, your results may vary. Void in DC and where prohibited by law.
Good luck and a great day to all!
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Old 07-07-2012, 08:24 AM   #8
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I have 30x9.5 on my 02 TJ and was wanting to move up in size as well. According to JP magizine TJ's can handle 31's w/o a lift. Kfdjason7620 what kinda rims do you have that lets you run 33's. I want to go 33 but dont have the cash for a lift right now. I have black steel rims(not sure the brand) that are dished a little. My tires stick out past the flares about 1". Do u think I can make 33's work? Can my 4 banger handle 33's?
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Old 07-07-2012, 08:38 AM   #9
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Quote:
Originally Posted by jradjsb
I have 30x9.5 on my 02 TJ and was wanting to move up in size as well. According to JP magizine TJ's can handle 31's w/o a lift. Kfdjason7620 what kinda rims do you have that lets you run 33's. I want to go 33 but dont have the cash for a lift right now. I have black steel rims(not sure the brand) that are dished a little. My tires stick out past the flares about 1". Do u think I can make 33's work? Can my 4 banger handle 33's?
I wouldn't go 33s till you can do it correctly with a lift at the very least. The only way to know if those wheels would work is to know the backspacing on them. I don't think you would break anything with 33s (and a lift) on a 4cyl, you just won't have much fun driving it. They don't have much power as is, so once you start adding larger tires without new diff gearing you have less power at the wheels.
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Old 07-07-2012, 10:35 AM   #10
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How much of a lift do I need to fit 33's? This is a daily driver that doesn't go very far, so I'm too worried about mileage or top speed. I want to hit a few trails every now and again and a little mud but nothing too crazy. What gear ratio do I need? What the most economical set up?
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Old 07-07-2012, 01:15 PM   #11
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Quote:
Originally Posted by EBJeep View Post
Thanks for the tips guys. Do you think wheel spacers or a change in wheels alone with proper backspacing would be sufficient? I wouldn't mind getting rid of the canyons.
You should be fine with what you have. Mine fit without modification, and even work fine with a narrower Ford rear axle. Buy the tires, mount 'em up, and give it a try before paying for new rims you might not need.

If you do change rim size, PLEASE don't get some mad-stick-out idiot rim. It looks stupid, really stupid. 15x7 with 4.25" backspacking will work great and keep your tires almost completely under the flares.

Picture: Cragar Nomad II 15x7/4.25" with Yokahama Geolandar I/T tires, which are especially wide for a 31-10.50-15 tire. I have enough room between the tire and the rear upper spring mount to easily slide my whole hand through; with the Canyons and BFG M/Ts, I have 1/4" (which still works w/o touching, but is closer than some folks might like). Keep in mind that my rear axle is 5/8" narrower on each side than yours is.
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Old 07-07-2012, 04:23 PM   #12
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@TJMichael & computeruser: That's good news. I was hoping to hear that someone had success without modifications. Also, for the record, I would not get the goofy wheel spacers that would extend my wheels out beyond goofy.lol I don't like that look at all either. I prefer the stock profile as much as possible.

@Falcho: I am looking to buy the duratecs as well. Originally I was going to get a mud-terrain, but my Jeep rarely sees the off-road, so it would be a waste for which the tires were intended for. I would have been buying just for the look. The duratec looks like a good compromise between an A/T & a M/T. I like the black theme as well. My Jeep is solar yellow with black trim. Yellow and black go together here in Pittsburgh If I do change the wheels, I had my eye on some MT sidebiters
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Old 07-07-2012, 05:02 PM   #13
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Sounds like a great choice! My TJ is also solar yellow, so even though I like the Canyons, a black wheel would look as good or even better. I sometimes wish I had 33's, but I can't afford a lift and re-gear right now. My 3.73's work well with the 31's and the 5-speed. Maybe someday I can do some upgrades, but it's my DD, so I can't do anything too extreme. Even stock, Jeeps are the greatest vehicles to drive! This is my fifth one!

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