I have a set of 29.5x10.5x15 MTs I replaced this week.
Bought them new Oct 2015
They have 154 passes on them will probably go another 150.
One of them has some scuffing on the sidewall when it rubbed the quarter lip when I first installed them.
$75 in the Orlando Fl. area if you can get someone...
Mine started missing one day and the computer was showing that it was only charging at 12.3 volts. It was also showing which coils were misfiring.
A new voltage regulator got it back to 14+ volts and all is well.