Hey, did alot of research on 315's. I went from 315 GY mtr's on my 80 to Toyo Mt's. The big,heavy toyo's killed it's power. Thats why I went with the Procomps on the 100. 3 ply sidewall, a lot lighter,same tread design and the 315 is 34.5" tall. Can't tell that much difference from the 305. I really like this tire.
