Joel D Canfield noted: >>I've got 75,000 on my Nissan Frontier, and the original tires >>look pretty darn good. Good grief Joel ... how the heck do you do that? I pretty much never get more than 40,000 to 45,000 out of a set of tires. I've got 81,000 miles on my Ford and I'll probably be looking at my third set of tires for that beast sometime around Christmas. >>As for leaking more slowly than 'air', how often to y'all have to >>air up your tires? A little more often for me I'm afraid ... had a slow 'leaker' in the driverside rear ... had to fill it about every 10 days for a few months until I had time to get it fixed. <aside> I saw a nice Porsche the other day with a rear flat on one of his rubber bands ... reminded me of something my brother told me recently ... he said that most of the air pressure problems he's been seeing lately are 'bead leaks' in the new lower profile tires ... sez he's been using a weak glue to get a better seal these days. [In the past we only hit the bead with a dishwash detergent solution.] </aside> >>Does someone still sell/buy retreads? Ack! Bought them once ... (on an old Ford station wagon) ... that was one time too many! Very scary! There was a lot of sideways play in those buggers. Yuck! >>Unless they're doing this free as a public service, Nope. I think they charged him $10 ... not sure if that was per tire or for the whole set. RonL.