I've had my Chaparral for about two years now. After the first season
of boating I noticed that all four tires on my tandem axle were wearing
in the inside pretty bad. I checked the air pressure and it was on all
four, by the same amount. Probably shouldn't have trusted that the
dealer had done that. Also checked the lugs and they were all about a
turn shy of tight. Again...should have checked this when I picked it
up.
Anyway, I ran it again this past summer. I can't really tell if there's
more wear or not. There's no threads showing or anything but the wear
is pretty bad.

Anyway...I'm going to go ahead and replace the tires for peace of mind.
Does anybody know of another cause for this or would the pressure and
lug problems explain it? I did check the axle alignment by measuring
from each tire to the tip of the tongue and the measurements were the
same.

Thanks