hi I have an 05 sportsman 700 EFI and I recently got some new rear tyres fairly cheap, problem is that they are 25" and the old ones were 26". I still have 26" on the front so wondering if it is going to cause some tranny or diff problems, I only use AWD when I really need to like towing in soft sand or mudding so theres plenty of slip when I do. ???????

 

to answer you question that i will put a lot of stress on your transfer and diff cases because your back spin slower then your front and then its trying to keep up with its self im my opion when you switch switch all 4