Informative video though it seems RVers are generally aware.
We have the five year rule on our tires. One saving grace is that car tires rarely last much more than 2 years. Rv tires are another matter. We have never worn the tread off a trailer or motorhome tire before replacing them though that may be the case on the trailer.
Good info and thanks for retrying, I guess Vikings never give up.
Norm and Ginny Milliard
1982 Sunline 15.5 SB
2004 Honda CRV 4 cyl, manual