I ordered a set of rear tires for my 400 auto cat and they are really wide!! They are 26x12.5x12 and the rims on my Cat are 12x8.

Will these new tires fit my stock rims, or will they cup in to much?

What after market rim size will be best for these tires?

Will they rub and Do I need wheel spacers? ....If I do, where do I spacers at?

Any help will be appreciated!!

 

I would think you would need spacers or different offset wheels. I also think you would need wider wheels too. Suggest you check to see what the tire manufacture recommends.

 

I don't know the tire or tread but you are going to have trouble with power.
I have 10/12 front and 12/12 back and I wouldn't want to go any more
not on stock rims