Mark Polk ??
Lordy...the only thing he knows about better tires for trailer use is propaganda from ST tire websites. From all I've read from his blogs he shows he has very little actual towing trailers experience.
He mentions a tire treads and Michelin XPS Ribs. The XPS Ribs have a solid rib tread type with fewer tread sipes made for low rolling resistance just like our commercial grade load G trailer tires (S637 Sailuns or Goodyears G614 RST tires). RV and commercial haulers use these type of treads in summer and winter. Michelin even has a add recommending them for commercial trailer service.
Check out a actual tire engineer, Tireman9 blog for actual LT vs ST tire differences.
