Europa-List: wheel removal

[Remi Guerner <air.guerner@orange.fr>]

<<<<<<<<<< remove the wheels on my tri gear to grease them for the 
annual. >>>>>>>

Danny,

I suppose you want to grease the ball bearings, right?

My question is: why is it recommanded by most aircraft manufacturers  to 
grease wheel ball bearings every year, which for a typical 100 hours/100 
take-offs/100 landings represents only about 200 rolling kilometers (125 
miles) while I can drive my car 1000 times more than that distance 
without ever having to service the bearings ?

Remi Guerner
F-PGKL