The Tailwind recommended service intervals are 150,000 miles.
The fleet leader, my demo, now has 268,000 miles on it and has never been serviced. It is planned to do its first service at 300,000 miles which should be in 2014.
It has had 5 sets of tires and a set of Taillight bulbs.
Double drilled spindles, correct seals, Genuine Timken bearings,
The Demo Tailwind is in daily service as a pickup truck.
Below, first two layers of steel tube have been unloaded and two more to go of larger tubes.
Bearing Buddies or other pressure lubricated systems for trailer wheels are not recommended for long distance highway work. What they are good for is trailers that are submerged like to unload boats and he pressure inside keeps the water out.
When going down the highway, these pressure systems cause high lip loading on the seals and they in turn wear themselves and the seal surface of the spindle. Short hops in the slop and rain, fine with these pressure systems.