Hey I just found myself in a bind and need some advice. I just bought a Kawasaki Bayou 4x4 and the back tires were shot. This was my first quad and not thinking anything of it I bought 25x10-11 Tires for it. The tires that were on the back were 24x10-11 and the tires currently on the front are 24x8-11. i was wondering if because the backs are now 25 and the fronts are 24 is this bad for the front and should i be looking into getting 25's all the way around. I have not driven the quad since because i dont want to damage it please help. Thank you  

it shouldn't hurt it, that just means that the back tires are an inch taller than the front, it really won't make a difference and you probably wont even feel it when your riding. Its safe to ride it with them on it, it wont hurt it at all.  

dont listen to the *** idiot above.  you need the same size all around because your bike is full time 4 wheel drive without the capability of unlocking your front diff, your front and rear axles are esentially connected.  if you run different sizes on your front then you do on your back, they will be spinning at different speeds, putting to much strain on your tranny and blowing your gearbox appart.