I generally don’t go fast loaded. Especially when heavy. But honestly if you knew how good electric over hydraulic disk brakes worked, I think you’d be a lot less concerned about it.
You also have to take into account location and traffic levels. 80mph in some places is like 50mph in others.
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Agree up to a point. Your post sounds like you have at least some common sense.
For your info. I have at least some contact with brake systems of various types. Of course our Duramax's have discs. Both of my approx. 11,000 lb. trailers have drum brakes, one is electric ( the boat trailer ) the car transporter has hydraulics. Both are properly set up, engineered for the weight, with the result that in either case, using the truck's brakes (which, in turn, activates either of the above) I hardly know the load is there.
Yes - people do blow by me in all manner of vehicles - here in Arizona the posted limit on our major Interstates once you get out of the developed areas is 75 mph. But again, 75-80 mph in a properly equipped passenger car, or even in one of our pick-ups when not loaded, is one thing; when pulling multiple tons of load quite another.
Some years ago I had a blow-out doing about 80 mph in my '38 Packard V-12. Bias tires. That car's suspension is like a sports or race car, meaning it came "stock" with sway bars and lateral stabilizers all the way around. Pretty much a non-event, other than the annoyance of having to wrestle those big 8:25 x 16's out of the side-mounts.
Last summer I had a blow out on the radial tires of my trailer. Oh..about 60 mph. (heat kills tires...this was on the Mojave on an August afternoon) (about half-way between the Calif.-Ariz. state line and Barstow on the I-40).
Whole different problem. When a radial fails, it often fails catastrophically; in this case the first blow out immediately took out the 2nd tire on the two-axle trailer. Both wheels quickly reduced to trash, ripped up the trailer, and made handling as I tried to get off the Interstate...well..challenging.
Yes, have to admit my '13 dualie handles almost as nice at extreme speeds as the Packard V-12, so on some roads...80 mph is barely keeping up with traffic...reasonably safe in the event of an equipment failure.
With this qualification - inspect your radials carefully at frequent intervals. Catch that bulge or swelling BEFORE it fails and rips your fender off and/or makes your vehicle difficult to control.
But c'mon guys....when pulling heavier loads.. with our size vehicles when heavily loaded, 60-65 mph is bordering on pushing one's luck. If you have to go much faster pulling heavy loads, show some responsibility and get a proper 18 wheeler.