DOT Endurance Test for ST Tires NOT same for LT Tires

14" and 15" tires are getting hard to find period unless you want some wide low profile thing for your pretend road rally kazoo box.

Back in the day, though, LRC was more than adequate for your typical 1/2 ton pickup that would come with LT rated tires on 15" rims.

Nowadays its getting so you need minimum 16" rims if you want to go with LT tires, and even 17" or 18".