I have an 2006 Artic Cat 400 4x4 auto

The existing tires are:
25x11-12 on Front
and 25x10-12 on the rear

When I measure the front stock rim it appears to be a 12x6 or 6.5 rim.. backspacing is like 3.5 or 3.75 inside, 2.5 or 2.75 outside - it's hard to measure.

The local CAT dealer couldn't say for sure because he thought the size was unusual... Although in the Artic Cat part guides the tire size is right... He thought it should be 25x8-12 on the front and 25x10-12 on the back.

The stock rim is stamped 12x6.5.

I'd like to take advantage of a set on eBay of 12x7 ITP with center caps & free shipping, that have 5+2 backspacing.. I think that means 5" inside, and 2" outside.

 

You will love this chart. ATV Tire and Wheel Application Chart : ATV Tires Free Shipping : ATV Wheels : Mud-Throwers.com

Seem like your off set is 5+2 and a bolt pattern of 4/115.

Strange thing is the off set changes when you move to a 14" Rim. Front 4=2 and rear 5=3 which makes no sense.

Oh I see 14" have a different width then 12" rims.