58-60 mph max no matter if it's our TC or the TT or the 5th wheel or even back when we had the class A's and C's. I could care LESS how fast other's drive as I'm not going to change my driving speed period no matter where or which state I'm in or even on which Interstate etc. My driving record is clean and I haven't had an accident in my 55-1/2 years of driving other than when an ambulance lost control at high speed and clipped the front on my car when I was 16 years old and while I was stopped dead. They paid for all repairs and the ticket they received also! Gotten only 1 ticket and that was for expired plates 11 days after my birthday that I had forgotten to renew. I love my very low insurance premimum rates!
Heck, if someone wants to pass me when at 58-60 no matter what they are driving or towing? Be my guest and if they drive like a maniac, I'll gladly even slow down for them so I don't run into their overturned rig. My passengers and my life are so much more important than some idiot wanting to save a couple minutes by placing everyone else's life in danger. Obviously, his own life and his passengers lives don't mean squat to him but a couple minutes does!