Ok so I am building a bike for bush and beach riding, aswell as on roads for a short while untill I get to the tracks. The tires that interest me ae the surly endomorphs for a go anywhere ride. I actually dont know what my frame is as I bought it for 10 bucks and its been stripped and painted a few times, now I'm stripping it again, looks like an 80's giant frame to me. Anyway I put on a pugsly fork and I measured it all up and it will fit the rear tire aswell. What do you think? Does anyone have these on MB's?