So my stock rear Excel is starting to crack at the weld. Not unheard of, apparently. I've just pasted all the rear wheel group part numbers for a 2001 WR426F, 2002 YZ250 and 2011 WR450F from the Yamaha web site into a spreadsheet and compared them. It looks for sure like the WR426 wheel should swap in directly, and odds are good for the WR450. Anyone tried it and know for sure that it will or won't work? Picking up a spare on fleabay or craigslist would let me keep a 19 around loaded up with a paddle (just lacing on a new rim eventually), so no switching tires just to hit the dunes. I see Michelin lists 130/80-18 as the size to use in place of a 110/100-18 in their catalog. Makes sense for a floaty, terrain-wrapping off-road tire. Anyone have issues with rubbing when using that wider tire in the YZ swingarm? Are they actually wider, or is it just a French thing to name them differently?