32x11.5x15 on a 7'' rim ?

I just installed a 3'' coilover lift on my 99 i am going to run 32x11.5.15. i was told they should be mounted on a 15x8,9,or10'' rim. I know that it can be mounted on my stock 15x7. This being my daily driver i was wondering if there were any major problems doing this. Thanks for the help

 

I run 12.5" tires on an 8" rim just fine. I believe that there is a rule that says that the tire shouldn't be more the 4" wider then the rim. That being said a tire on a 7" rim will cause the tire to 'balloon' more making the sidewalls slightly more vulnerable offroad. You will have to run a bit less pressure to keep the contact patch flat which will theoretically affect mileage a tad. There is also more movement in the sidewall so it will not handle quite as precise as putting it on a wider rim.

Basically I would say that if you like the rims you have it won't hurt to use them. On-road a wider rim will handle better and the tire will last slightly longer but there is not even close to enough difference to justify the cost of new rims if that is the only reason.

 

Correct. General rule of thumb is to keep it as CLOSE to 2" on each side as possible (4" total)