Im looking to upgrade my wheels this spring as I need new tires anyway. Do any of you with a XB21 with the boatmate trailer run 15" wheels. I currently have the standard 14 inch 5 spoke wheel and looking to go to the avalanche style thats on the newer trailers. I can get either size but since I getting new wheels and tires I thought Id go with 15" wheels vs 14" if they will fit. 205/75 14 vs 15 is only 1 inch difference in OD.