We've been very happy with re-treaded tires on our Cherokee Pathfinder. They
appear to have a lot more rubber on them than new tires, and my A&P swears
by them...

They don't appear to have more tread, they actually do. There is a requirement
for specific tread depth on a new tire but there is not one for retreads so
retreads can have a thicker tread depth than new and consequently will take
more landings. Probably one of the better values in aviation.

John Dupre'