ksg5000 wrote:
Never heard of "flat spots" being an issue - have heard that tires need to be exercised occasionally to keep the chemicals within the tire distributed to prolong life. Doubt putting the rig up on jacks does anything to prolong the life of the tire.
I have always heard that RV tires tend to rot from the inside - your tires are well beyond the norm that most RVers would consider safe. If it were me I would have the tires unmounted and inspected by a tire guru. Just my 02.
Even without visible damage, inside or not, they need to be retired. I rotate tires out at seven years at most, even major tire companies such as Michelin say no longer than ten.
