I want to upgrade, not sure what size tires will fit and do I need wheel spacers and lift kit?

What performance mods do I need for larger tires or don't need to ?

Like the Maxxis Vipr tires.

Maxxis Vipr front 27x9R-14
Maxxis Vipr Rear 27x11R-14

What size wheel will work? offset?

Stock 25x10-12 Rears and 25x8-12 Fronts

Stick with 12 inch wheels and get taller tires?

Thanks,

 

Bought these.

 

I run 27" XTRs on my Vinson, no lift, no problems

 

Thanks,

Was going to go with the Maxxis 27 Vipr tires, but decided to try the ITP Evolution tires.

 

My 350 Grilly was Stock 25x10-12 Rears and 25x8-12 Fronts I bought 26x11-12 rears and 26x9-12 fronts Maxxis Zilla without much performance loss so I think your 500 will handle 27" easily.