Also it was suggested to me that when one side of the tyres
get warn a bit, one can have the tyres reversed on the rims
to wear the other side.  I rotate all 5 tyres on my syncro
every 5,000 kms, and yes my tyres do wear unevenly even with
the "correct" align & balance & camber etc.  I've also been
told that camber of the roads has a lot to do with tyre wear
too. Malcolm