It seems that almost all the Nike shoes that I've gone through (LunaRacer, Streak LT3) all split where the upper meets the soles. I don't know if has anything to do with the conditions in which I put the shoes through (I user superfeet insoles and run almost 100% on dirt trails). Because I run on dirt, my shoes are always dirty (I never wash them) so does this shorten the life span? I don't log the miles on them but I'm guessing they've gone through less than 200 miles. Anyone else have this issue?
Also, anyone know of any shoes that are similar to the LT2? I like the softer cushioning on the forefoot better on that version.