FYI (if any one cares), I installed a C6001, 120/100-18 rear tire today on my 200H. I was concerned that that size of Maxxis tire might be too big even though Maxxis tires are sized a little small compared to the Dunlop I had been running on my KDX. My D756, 100/100-18 was nearly identical to the new Maxxis. The casings were exactly the same width. The knobs on the Maxxis were 1/8" wider at the widest point and the diameter of the Maxxis was probably less than 1/2" taller. I say probably because since my Dunlop was worn out I had to guesstimate its original diameter. Those measurements are with both of the tires when installed on the bike and aired up. I'll probably run it at 10 LBS since it's a 6 ply rated tire and seems to have a very hard rubber compound. I used to run a C6001, 100/100-18 on an XR200 that I recently sold and it had pretty good hook up and wore like iron. I'll soon post a ride report.