re: Tire pressure on truck tires question.

They are just constructed differently than LT tires. Composition is different in most cases also. Most tire manufacturers recommend getting an LT on a truck. Truck manufacturers use p-rated ones specifically for mpg and ride purposes.

If people wanna put passenger tires on a light truck, more power to them. Any legitimate tire shop wouldn't put them on a 3/4 or 1-ton for a reason. Why does that reason disappear when you step down to a 1/2 ton?