I tried to get new tires for my 05´Nomad but ran into a problem. Dealer wants $420 for a set. Went to Dennis Kirk, J&P Cycles and Parts Unlimited and found the same tires for $150 less. The problem is that they are not available at all. These tires are Bridgestone´s and the sizes required are only made by them. O.K., here´s the question. Any body experimented with different tire sizes or manufactures. Need some help here. Running out of rubber..