Mr.Mark wrote:
Cbones, if it were me and you have plenty of tread, I would go up to the seven year mark and maybe change them all. If you want to keep the steers, put that set on one dually side and keep a fresh set on the front.
Our seven year old Michelins had 57,000 miles and had plenty of tread. The tire shop gave me $50 each for the take-off's as they will resell them to re-treader, a guy needing a tire or two or to a guy who needs tires for his farm trailer. They still have life in them some way or another.
Safe travels,
MM.
That was my plan. I was just curious what could be expected for tread life. At the rate I am going I would expect 120-140K which I think is pretty respectable.