I was hoping to buy some used 16.5 swampers on here, but nobody had any for sale. So it looks like I will have to buy some new ones. I am thinking swamper tsl/sx. My dilema is between the 36x12.5x16.5's and the 35x15.5x16.5's. I like the 36's because they are taller, but I also like the 35's because they are wider and I thought that maybe that would help keep the tires on the rims (16.5x9.75) when aired down. Can anybody give me some advice as to why I should buy one over the other? Thanks, Mike.