[swazi_matt]

I know that the fim spec enduro tires have shorted knobs than the mx tires. I have only tried the 140/80 that came on my bike so cannot really make a comment on this, but have read that the general consensus is that the 140/80 suits a rider that spins the bike less. So if you ride like a trials rider (jarvis, birch) you will do better on the fim and if you are a more aggressive rider you will prefer the mx type