'xactly. I'd rather give a precise, definitive, useless answer than some
more realistic, accurate but possibly useful consultant babble like "it
depends".
In case Greg's interested--
It depends on how often you tow the trailer. Wheels that are put in motion
out on the road regularly will last a bit longer than the ones that just sit
on the field. You might get several years out of the tires if you trailer
your glider someplace a few times a year. Tires that experience a lot of
weather (lots of sun, temperature extremes, moisture, low inflation) but no
road use might be crap in a year.
It depends on if you bought good quality tires to begin with or wanted to go
the cheap route because you don't plan on trailering much anyway.
It depends on how averse you are to the extreme sport of "high speed glider
trailer blowout handling" and fixing flats by moonlight.

Q - Are you a consultant?
A - It depends

Brent
"Bill Daniels" wrote in message
news:z43sd.505385$D%.286134@attbi_s51...

You mean, like, just before the air starts showing through?

"For Example John Smith" wrote in message
...
Blowout date - 1 day
;-)

"Greg Arnold" wrote in message
news:xGTpd.175805$hj.6434@fed1read07...
How old can trailer tires get before they should be replaced?