On Thu, 23 Aug 2007 06:05:37 -0700, "M. Baker"
wrote:

We just bought a 2001 Lund Mr. Pike a couple weeks ago. We went on
vacation last week, and of course had to take the boat with us. About
40 miles from home, the driver's side trailer tire blew out while on
the freeway going almost 70mph. Then, about 100 miles later, the OTHER
trailer tire blew out - this time we were only going 60mph, as we were
paranoid after the first blow-out.

Air pressure.

The tires overheated.