I went into a local m/c parts store and picked up an extra set of tubes--I had just ordered a new rear tire and remembered the size (130/80-17) and the guy checked his book and sold me a 500/5.30-17 tube. I had gone to the Avon distanzia over stock, and he said the one he gave me was right for a street-oriented tire. But now I see the "KLR FAQ" site says 4.00/5.10-17 is right. I don't know if I should take it back or will it be fine. Help, anybody?