With the L6060 and a snow pusher, I do most of mine in Medium. But that being said, the weight of the snow is a big factor, lite loose snow I am sure you could use high, but in wet heavy slushy snow low might be the better option.
R14's would be a option also. Plus being a radial he could air them down a long way for better flotation/traction.
I have seem them at dealers on the L6060's and the MX6000's
Honda does not use the tpms sensors any more. They use the wheel speed sensors. The idea is if one wheel reads different than the rest, it must be going flat, so it turns the on the flat tire lamp in the dash.
When I ran a blower I would always prep/test run it in Nov. Whether it stayed on or not, depended on what other, if any, chores I needed the tractor for.
I originally planned to add 1/4 inch to the ends of the locks on mine, but never got there, and so far so good. I have pretty much given up on the idea lengthening the locks.
I have knocked my off. A lot cheaper to buy aftermarket. My dealer does not even stock the oem lens, but they do keep aftermarket ones to replace the oem ones.
I have also adjusted mine to be a lot closer the tractor.
My princess auto hitch needed the adapters. But I bent some 1/4x1 flat bar into "U"s and welded them into the lower hooks. So now I can just use the standard cat 1 pins.
My hitch also came with an adapter ( kind of Y shaped) so I can connect the top link pin to the quick hitch. On equip that...
Just a guess, Try the last four digits of you serial #, or the last four backwards. look in the owners manual and see what it states, or call your dealer.