25x8x12 front and 25x10x12 for the rear. So far for the type of riding that I do they have been great. Canyons, rocks,snow,trails,dirt,gravel and very little mud, if I have to cross it. They are a 6 ply tire so they do ride a little rougher than the stock 2 ply but not that much. They have 3/4 lugs and a rim saver feature to help keep those rocks from dinging up your rims. I spent a large amount of time looking at different atv tires and so far I am happy with what I bought. This size keeps the mud inside the fenders and off me and passenger and also keeps the agility of the machine. They do throw a very tiny amount of rock on the gravel road but it is minor. Other riders used to be right on my rear going down the road and trails and I have been rear ended by idiots in the group because they follow to close but not any more. So I guess its more of a good thing, it makes them stay back farther.
I will keep you updated on how the tires perform and handle. Again if you are looking for a great all around tire I think these are a good choice for the terrain listed and the price of $250 shipped to my door. Cannot beat that with a stick.
Front
Rear