Ed,

My research into this question resulted in me concluding that one
should look at the Duro, Maxxis, Denman (in that order) tire brands.
Goodyear Marathons are variable. Carlisle are not recommended (note
that Carlisle also owns Titan). I chose Duros.

Whatever you choose, make SURE that it is an ST tire - this stands for
Special Trailer. And DO NOT run them at low pressure - run them at
whatever the pressure is that is stamped on the sidewall to get
maximum load carrying ability with minimum heat build up.

As for the radial/bias question, radial tires are *not* recommended
when lateral sway is a problem. However, radials do run cooler, and
they provide a softer ride. I chose radials for my Cobra trailer,
since sway has never been an issue, and there is no suspension.

As for longevity, it's recommended that you replace trailer tires
every 5 years. Although they may look "new", the sun and atmosphere
damage the rubber.

Finally, what kind of glider did you buy?

-John

On Jan 20, 10:14 am, flying_monkey wrote:
Gang,

I'm leaving this Friday to pick up a glider that I purchased 1100
miles away. The trailer looks brand new, but is about 12 years old,
as are its tires. The glider and trailer weigh in the vicinity of 950
#. The tire spec from the owner is :
Carlisle Sure Trail ST
ST205/75014 (replaces F78-14ST)
Max Load 1760 lbs @ 50 PSI (actual load will be under 500 lbs)

I plan to buy 2 new tires before the trip, and stop at the first
service station after the pickup and have them mounted. Question is,
what to buy. It does not appear that the trailer has any suspension,
so I think I'd run the tires slightly soft, maybe 25-30 psi. I was
wondering about whether it should be radial or bias ply? Any
particular brands?

Thanks in advance,
Ed