Got a buddy with a new Sp600. What's the biggest tire (preferably Mudlites) he can run with no mods on stock wheels?
And the biggest he could run with minor changes.

 

The problem you run into with stock wheels is on the front the tires will rub the tie rod ends. I put 28x9-12 589s on my 700 on stock wheels but had to put one inch wheel spacers on the front for tie rod end clearance.

 

The 28's didn't hit the floorboards?

 

You can run 26in tires without doing anything if you go with 27or28s youll need to lift it...

 

It doesn't matter if it is lifted or not, with the stock rims anything wider than an 8 inch tire will rub the tie rod ends on a 600 or 700. I do have a little over one inch lift on my 700 and moved the floorboards back about 3/4 inch to clear the 28s and have one inch highlifter wheel spacers. Some people just put a stack of washers on the lug stud behind the wheel to space it out some, but I don't like that method and still the tie rod ends are so close to the tire the mud will probably tear the rubber boots off.