Tires
I've got about 10,000 miles on my original 'D' rated trailer tires. On a -10,000 lb. 37' TT. I've always followed the 10% rule on my truck tires - inflate cold to 90% of max PSI to allow for heating...
Forum Discussion
What you should do is dump those "D" rated tires and get a set of "E"'s. Run them up to 70psi and not worry about anything.
