So, if I have a certain size of tire on my truck, is that necessarily the only size of tire that will fit that wheel?
If not, how do you know how big of a tire will fit a given wheel? Beyond that, how do you know how big of a tire will fit under the truck?
Well the "R" number on the tires size is the only thing that has to stay the same. That's the Rim diameter. I.E. 31x10.5 R15. That's a 31 inch tall 10.5 inch wide tire for a 15 inch rim. Depending on the width of the rim (say an 8" wide rim) You could run anything from a 30x9.5 R15 clear up to at least a 36x12.5R15 on up depending on the width of your rim. Going with a rim that is a few inches narrower than your tire will help it stay on the bead when wheeling at lower pressures. Post up here what size rim you've got and what they're going on and we can give you a better idea of what you'll want or need. Somewhere on your wheel it will have the size on it. (15x7 or 16x8 etc) It may be on the face, between the lug holes or possible even on the back on one of the spokes. You'll just have to look to see where they put it on your particular rim.
The tires are 31x10.5x15. I looked all over the wheels and I cannot find a width indicator. I recently painted them and didnt see anything either. I dont think they are stock.
Can I get 33x10.5x15 onto this thing? Should I get a 2 inch lift first?
I'd get a 2 inch lift first... You can check on either side of the tire and see if you have more than an inch between the tire and the wheel well which I assume you will, but you limit flex a lot. Better of lifting first then tires
My bet is by looking that your wheels are 7 inches wide. No problem to install a 33x10.5 on them, but you will definitely need lift first. I had a '98 Taco TRD that I put 32x11.5s on and they rubbed the frame at full lock. The spacer lift you were talking about in the other thread would be fine.
You could probably fit a 33x10.5 without a lift, but a sharp turn or a bup will put it into he fender in a hurry.
I noticed in another thread you mentioned just startd wheeling. Base dont hat let me offer one very small suggestion:
Take it out as is. Learn what is does well and where it struggles. Then upgrade what you need to.
If you find you need more axle clearance (and you will) then get bigger tires. You will never build a rig to met the "needs" of most internet sites.
Very true Ron, and I do plan to take it out. No budget for upgrades right now, but I like to plan it out. Personally, I am interested in a lift and tires just as much for the look as for the function.
That lift is similar to the one I was thinking of, but without the rear shackles. By lifting with shackles you change the pinion angle of the rear diff. I.e. the angles of the U joints at the front and rear of your drive shaft will not be the same and can cause a drive line vibration. That being said, my '85 4runner has a big shackle lift and it has a vibration right about 50 MPH. It goes away at 53 or so, so I don't really worry about it too much.
That's the same lift I installed but I also did a 1" body lift on my 96. I'm running 32's and rub just slightly at full lock but I've got 10" wide rims.
That lift is similar to the one I was thinking of, but without the rear shackles. By lifting with shackles you change the pinion angle of the rear diff. I.e. the angles of the U joints at the front and rear of your drive shaft will not be the same and can cause a drive line vibration. That being said, my '85 4runner has a big shackle lift and it has a vibration right about 50 MPH. It goes away at 53 or so, so I don't really worry about it too much.
