How many miles did you get out of the 450's? I ask because I sold my first set of aftermarket rims with them on there and at the time, they had about 12K on them and the next owner got about another 15K out of them, although they were pretty close to being wore out. So I'd say 25-27K is pretty good, especially since the tire had a 300 wear number and AA traction and A for the temp rating. What the stats on the Nitto Gen tire (treadwear, traction and temp)