Originally Posted by ependydad
They're not bad (in fact, good) in my opinion. Maxxis are good up to somewhere in the ballpark of 14,000-15,000 lbs. after that and you run the chance of overloading one or more wheels.
I finally put together a blog post of my *opinions* - it's similar to posts I've written here before:
What are the best tires for your trailer? | Learn To RV
Your blog overlooks a number of tire sizes suitable for 6000# and 7000# GAWR axles.
I don't do brands, just sizes unless only a single brand makes them.
For the 6000# axles there is the ST235/85R16E, rated at 3640# at 80 PSI and the popular all wheel position 205/75R17.5F, rated at 3525# at 109 PSI and is only 30" tall.
Moving on up to the 7000# and 8000# GAWER axles you get into a log jam of steel cased tires that all require the high load and PSI capacity rims at 16x6.5" which almost certainly require new rims. All of those tires range from load capacities of 3750# to 4080# and all at or very close to 110 PSI.
All of the new ST tires from China will have been redesigned to operate at a higher speed restriction and each individual tire must have a speed letter on it's sidewall or a statement to display it's speed restriction. The popular letters are somewhere from 68 MPH to 87 MPH.
Speed letters are not an invitation to speed on our highways. But they do provide us with some satisfying news, the tire's speed letter also tells us that the tire can travel at that speed fully loaded. It's a nice form of durability we did not have with the 65 MPH tires.
I've skirted the 14" & 15" tires. There are - in most cases - a lot of ST replacement tires that can go up a load range and provide longer, satisfactory life expectancy for that trailer tire group.