I've read several times on here over the years about treadrights disintegrating on folks.
Why not go with a Fresh, non-retreaded tire? I mean, really why not?
I bet Michelin LTX AT2s can out do that tread design on both highway and offroad, quite yet sticks to mud, gravel and sand. $600 installed for 4.
Luck and enjoy that Runner.
__________________
2001 Limited 4WD - 346+K - SunfireRed\Thunder Cloud; - 265/75/16 Michelin A/T2s - Fat Pat's 1.5" BL - StopTech ANGLED rotors - In series 699 trans cooler, New Yota1 transmission, All new OEM suspension front to rear.