First of all I'd like to say hi. This is my first post here. I have an '03 wr450f I bought new and it is the first motorcycle I have ridden or owned. I ride the sand dunes a lot here in Utah and I hate changing tires when I want to ride dirt. I found a rear wheel assembly for sale that has a 560/18 Cheng shin dune hopper (same as sand pro) paddle tire on it. The seller claims it will fit the wr450f. It is on an aftermarket wheel - talon hub, excel rims and spokes, renthal sprocket - so the rim may not be stock width. Anyone know if there is enough clearance to run a tire this size? I'm not sure if it is wider or taller or just a different unit of measure that is about the same size as stock. Help?