On Jul 22, 6:16 am, jcarlyle wrote:
On Jul 22, 8:24 am, RN wrote:
I've been looking into this subject as well. My trailer is a 1983, and
uses 13 inch wheels. For it, the proper tire appears to be
ST175/80R13. Six ply is preferred, and if you want bias ply substitute
a D for the R. The most important letters are the ST, as this
specifies Special Trailer.

As to the make of tire, my research has shown that customers in the
USA recommended the Duro, Maxxis, and Denman. Goodyear Marathons have
variable reviews, and Carlisle (which also makes Titan) are NOT
recommended.

I also wanted to replace the wheels, as they are old and rusty.
Unfortunately they have an offset, and the 13" wheels I've found have
zero offset. Spindleberger says they use a number of different wheels
with different specifications, and so far I don't have a definitive
answer as to the wheel specs used on my trailer. I did find a local
shop that will bead blast the wheels, check for cracks, and then
powder coat them - that's probably what I'll do come the end of flying
season.

-John

The tires on my Cobra trailer from the factory are marked
185R14C8PF (102/100N)LT

They appear to be GT Radial Max Miler X
Load Range D 1875 lb at 450KPA 65# cold

They need to be replaced, and the local tire stores seem to be having
an issue identifying the correct replacement. A brief web search has
also been unsuccessful.

Any advice on the correct replacement, or where to find the code for
reading the markings would be appreciated.

John

If your getting new rims too, ditch the finicky European 13" setup
that you can't find the correct size of and UPGRADE to a 14" or 15"
that has PLENTY of tire selection and is more robust. If you don't
live near a big city etc, order new rims online if you need to, but
you should be able to find good 14"-15" trailer tires (stiffer
sidewalls than car tires, but 6-ply truck tires are good too) locally.

-Paul