So I have over 2,000 miles on a 2013 ST-S in three weeks. This is after riding 65,000 miles on a pair of 2008 GS SM-5s. I can tell you the 2013 is a little hotter on the left knee than the 2008s and I can tell the gas cap is warmer when I grab it, but nothing I would consider excessive. As for how it is ridden, it is ridden hard. One day I rode 546 miles from 8 AM to 5 PM in 95 degree heat (NO interstate or U.S. Highways) and it really was no concern, but I could feel more heat on my left knee. My rear tire is going to be bald in the middle by 3,000 miles so I do not baby the thing. Clearly some units suffer from this more than others. BRP makes decisions based on documented facts, not how many complain on a forum. BRP sells units to their dealers, not consumer direct. If you want something to happen, BRP needs to see the hard data from their dealers. Unhappy owners need to work through their dealers so the issues can be documented and the data analyzed by BRP. This is going to do more in the long run for them to determine the root cause of the heat issues, they need the facts, not just complaining. Decisions are made based on hard facts and data supplied by their dealer network, analyzing serial numbers, ECU software versions and even vendor supply sequences. Who knows, maybe there is a bad batch of sensors that is supplying bad info to the ECU and the hot units are running leaner than they should? More airflow is a good thing, but my guess is there will be more to this than just heat shields and air intake. Why are some spark plugs ghost white? Are these the same units as the ones getting hot? They need to document all of this and it will get resolved, just my opinion.