Hello all. Newbie here, with a particular question. I ordered a set of STI HD matte black beadlock 12" wheels wrapped in Maxxis Zilla 25"x8"12" front and 25"x10"x12" rear rubber from ATVDirect for my new 2015 Rancher w/IRS (FA5), but they didn’t mention anything about needing wheel spacers. I’ve been reading different things and seeing that they may be/will be required when changing wheels? Is this true or does it depend on the wheel and model ATV? Just wondering where to find the proper information on the proper wheel spacer if indeed I do need them. Been looking around on here and can’t find much on my specific model Rancher.

I think this is also called offset, but not sure what it means, how to measure it, etc. ATVDirect told me the 25" tires would fit without issue, so maybe I don’t need any spacers for offset?