A little off topic, but we were having blow out problems with the 15" tires we had on our race car trailers. One trailer was also giving us fits with the outside bearing on the 5200# axles. The trailers are loaded right at their capacity. Actually, mine is about 2000#'s above.
My dad's was the one that was having the bearing and tire problems. We found a very simple way to upgrade the axles (Dexter) to the 7000# bearings and 8 lug hubs. All we had to do was swap out the hubs/drums for the 7000# version which cost approximately $340 total and then we were able to put LT235/85r16 Goodyear G614 G rated tires. These and the wheels are rated at 3750#'s each at 110#'s of pressure cold.
One of the advantages of these LT tires over the ST tires is that we can drive over 65 mph. I believe these are rated to 75 mph, but I know it is at least 70 mph which we stay at or below. I also realize this thread was comparing SL to LT. Just thought I would mention our recent upgrade.
