Unit 1 towing Unit 2 was traveling eastbound in the inside lane of IH-20. Unit 1 suffered a tire failure resulting in a blowout of the front left steering tire. Unit 1 towing Unit 2 steered towards the center median striking the guardrail and the concrete overpass barrier. Unit 1 and towed Unit 2 then rolled one-quarter roll right-over-left. Unit 1 and Unit 2 became engulfed in flames. Unit 1 came to rest in the center median, facing east, resting on the left/ driver side, with significant burn damage and not drivable. Unit 2 remained coupled to Unit 1 and came to rest in the center median, facing east, resting on the left side with significant burn damage and not towable. The driver of Unit 1 suffered severe, non-life-threatening injuries. Unit 1 Contributing Factor 98 (OTHER): Unit 1's leading contributing factor was found to be a tire blowout of the front left steering tire New Tire-61721-Jul25 Yokohama :RY617 Size:295/75R22.5 Ply:16 New Tire-51731-Jul25 Yokohama :TY517MC2 Size:295/75R22.5 Ply:16