33x12.5x15 on stock alloys?

These are the wheels I'm running for my off-road tires:



I'm currently running some TrxUS MT's in 31x10.5x15 but they're down to around 35-40% tread left...

I was out off-roading the past couple of days, and can certainly see the advantage of running a 33 vs. my 31's...

I found a good deal on some 33x12.5x15's (TrxUS MT's again) with around 80% tread remaining, and was wondering if they'd fit on the rims pictured above...

If the tires will fit, I'm thinking I'd need spacers... is that true? and if so, what width spacers do y'all think I'd need?

Any/all input appreciated! (If it's related to the question, anyway!)

Thanks!

 

Definately not a good idea and especially not a good idea if you're driving the truck on the street.

The width of the tire (12.50) is too WIDE for the stock 7" wide rims. You need atleast 8" wide rim for size tire (width). Most folks run 15x8" rims with 33x12.50's (I had them on my jeep).

Running a wide tire on a smaller rim will cause poor tire wear. In order to get even (long lasting) tire wear with that combination, you have to run a really low tire pressure. Having such a low tire pressure is bad on the sidewalls in corning, etc. It's not safe.

When I had my 96 tacoma.... The widest tire I ran on my 7" rims (same as in the picture), I had 32 x 11.50 tires and I still had to run my tire pressure at around 26-29psi to ensure even tire wear.

If you need to keep the 7" rims - you can run 33 x 9.50" tires on them safely. Besides all that, you might need atleast a suspension lift to fit 33" tires and maybe even a body lift also.

 

janster pretty much nailed it on this one. But I am also doing this. I am running 33x12 on my stock 15x7. I keep the psi at 25, the side walls are really coned in, even with the pressure that low the tires are wearing a lot on the inside. Only reason I did this because I got the 33 in a trade. best affordable thing to do is get some steelies for those 33.

 

... sounds good, thanks for the advice...

When you say 'steelies' .... you're not meaning that the Toyota steelies are 15x8, are you? Or do you just mean to find myself some steel 15x8's?

 

Like these http://www.jegs.com/p/Cragar/Cragar-Black-Soft-8-397-Series-Wheel/754162/10002/-1 in 15x8. These are my next set for a beadlock project. Don't get 15x10 it'll look like balloon tires.