I need to install new tires on to my HTT. The tires are 180/80r/13. Very small, options are minimal. I have the original TowMax tires on it. When it went into storage last fall they were beginning to weather check all over the sidewalls, I would guess I have well over 15K miles on them.
If I stay with the same load range (1480 lbs), I can use GY- Marathons, Maxis, TowMax, Carlisle and a variety of lesser known tires. Ideally I would like to go up a load range level, which is difficult to do, because the tire size. This leaves me with going with a Bias tire (Carlisle Sport Trail 1710lbs), supposedly Carlisle’s new Radial Trail RH tire has a 13” that is a load range D, but I cannot find any online documents on it, but Discount Tire says they can get the tire. They say it’s only been on the market for a few months, which would guarantee a fresh tire.
The HTT tows very nicely, but I would like to have a bit more of factor of safety. The stock tires have a carry capacity (dual axle 1280#). I have never weighed my HTT, but if we just say worst case it weighs 5K# (for easy numbers), with a 12% tongue weight (to calculate max tire weight), this would put load of 1100 pounds on each tire, so I have about 180+ pounds to spare. In my option that is not a lot. The Bias Carlisle Sport Trail (dual axle 1480#) would give me about 380 pounds.
Radial or bias ply tires? From Trailer Tire Basics | West Marine
Radial tires have plies that run perpendicularly across the tire and belts (often made of steel) running below the tread around the tire’s circumference. Bias ply tires have their plies running at 30° angles (like the stripes on a candy cane). Most motorists believe radials are better (and they are for your auto). Should you buy them for your trailer?
The answer depends on your trailer’s handling. Bias ply tires have stiffer sidewalls, so if your rig tends to sway, they may help reduce this problem. They also have advantages for carrying heavy loads. Radials, as most of us know, are vastly superior for tread wear. They’ll last an average of 40,000 miles vs. 12,000 for bias plies. However, oxidation, not tread wear, wears out trailer tires. Radial tires are also less prone to developing flat spots on one side when they are parked in the same position for weeks at a time, and tend to run cooler on long trips. Bottom line: consider your trailer’s handling and the manufacturer’s recommended tire type. If you travel long distances and/or put lots of miles on your tires every year, radials are worth the extra cost.
I have spoken with three local tire shops, two big national chain stores and one local M&P shop. The national chain stores need 3-5 days to get whatever trailer tire I need that they carry to the shop. The M&P, stated they could any tire I pick the same or next day. Maxis and Marathons are the same to me. Installed they are about twice the price of Tow Max and I have no desire to go with them.
One item for or me I want to be able to get a replacement tire while on the road. If this new Carlisle is a LRD, how hard would it be to get one quickly??
What are your thoughts for new tread? Also what’s your thought on changing the spare too?