How fast do you go

65 mph due to 65 mph rating on my tires. Even if they were rated at 70 or 75 mph I would still go 65 because the roads in this country just beats stuff up to much as it is, higher speeds only make it worse.

Just remember that you are not driving a lightweight short 4-wheeler, but instead have a lot of length and WEIGHT behind you. With limited braking power, a lot of weight, and a flex joint in the middle, the rig is not a high-performance sports car. Observe the 18 wheelers around, and follow their example. But remember that there are a good number if idiots driving those also, they are getting paid by the number of miles in each driving period, and some have very little experience or training. So observe the current conditions, and determine your speed accordingly. There is a lot of difference between driving the flat straight midlands, and the rolling hills and curves east of the Mississippi. Where 70 or above might be OK some places, anything over 55 will be risky in many other places.

62.5, I don't believe going faster can be safer and result in better fuel mileage.

60-65mph

64.5

I generally do the speed limit up to a max of 72 mph in a 75 mph zone.

NMDriver2 wrote:
The greater the difference between your speed and the normal flow of traffic speed the more likely there is to be an accident. Not necessarily involving the slower/faster vehicle but they are more likely to be the cause of or be involved in an accident. In short: it is just as unsafe to go slow as it is to speed.

I tow at the same speed as the semi trucks. 80 in west TX and 55+ in CA

As long as I am going to be in a wreck I prefer to be going slower. That way I only roll over 2x instead of 3+. Also less likely to be at fault.

I like to be in the 65MPH range when towing, if for nothing else I like being the slower vehicle so people have to go around me. That's less I have to weave in and out of lanes passing people.
Now there are times where I will set the cruise about 70, that seems to be a sweet spot for power and mileage on my truck.

When I’m towing I do 60, I will increase my speed to pass someone going slower and to get outta the way of faster traffic, but 60 is my cruising speed. Gives me plenty of time to slow or stop if I need to. I have no problem with people flying past me.

To a certain point speed differential is a safety concern. At some point, you have to factor in driver reaction time, braking and vehicle handling at different speeds. Just look at the multiple vehicle pile ups on highways - Most of this is due to excessive speed for the conditions and equipment.