I just took delivery of a new set of Maxxis M6006's (for my 650R): - 90/90-21 - 130/80-18 (For now I am not going to mention the internet vendor I bought them from, unless they fail to make this right!!). Here's my problem: if I go to the Maxxis -US website they show that the M6006 comes in various sizes, but all sizes carry an "S" speed rating. I specifically selected the M6006 because it gets good reviews and carried an S rating, meaning it is certified to a max of 112 mph. When my tires arrived this afternoon and I opened the packing to inspect them I was surprised--and irritated--to see that the sidewalls are makerd "66P", not "66S" as shown on Maxxis website. What gives??!! (The "66" number is the numerical Load rating, I am not concerned about that.) I contacted the vendor (not Maxxis) and they plead ignorance, but insist they shipped the tires I ordered. My argument back to them is Maxxis does not manufacture a "P" rated M6006, so are the tires they shipped me manufacture-discontinued? If one of you guys are currently running the M6006 would you please check your sidewall marking and tell me what your marking is, "P" or "S" or what, and when did you buy yours? I am also going to contact Maxxis-US tomorrow to try to get to the bottom of this. Thanks in advance.