I had 15/35-15 TSLs on my '77 when it was still a K10.
I loved them. They ran out excellent for a bias tire. Real smooth. Nice bawl, sounded like an airplane. Would go through some of the wildest mud I could find. Cleaning was NO problem (tread, truck not so much).

But as you may already know, they are about a 20,000mi tire.
