Different years - any years strongly preferred?

[maxtog]

It will also very much depend on humidity level and if you are moving or stuck in traffic/lights.  Where I live, it is often VERY humid, which just makes higher temps unbearable.  When the humidity is lower and I can keep moving, higher temps are doable.  For example, here, right now it is 88F with 70% relative humidity, so that feels pretty bad.

I, too, always wear all the proper/full gear (well, except not pants- those are just jeans in the Summer so not that much protection there; however, I do wear heavy leather chaps over them in the late Fall, Winter, and early Spring ).

[PH14]

It is the pant that tend to really help. I ride with motorcycle pants and boots and don't have an issue with the 2009. I just bought new boots and I feel heat a bit more, both on my C14 and Ural, but not bad. I believe the leather is thinner on the new boots. They are TCX boots with Goretex as were the old ones.

[Big Red]

Dunno how bad the first gen is, but the second gen in 110* isn't fun either. I think I'm getting too old to ride over 105*.

[Boomer]

It is rare that it gets that hot over here and I wouldn't have been riding in that heat but we were halfway home from the GCE Austria Rally and had a train to catch across the English Channel, so needs must. Whilst it was hot and unpleasant I coped with it and the bike coped well. 2400 miles in 13 days, and we stayed away from motorways/freeways for the most part. 430 miles of that was on French and Belgian motorways and 40 miles on Austrian motorways. Was a fun vacation.