Hey I bought a 06 yz450f that had an 18" rear wheel and thought I'd do more trails riding so I wasn't too concerned. But I'm finding myself on a track more and more. From what I've read it seems like I'd only notice the tire difference if I were riding Supercross. My question is would it be worth the money to convert my rear wheel back to 19". BTW I will be riding mostly on tracks in washington. So I'll be dealing with some rain.