If you've been driving that good-looking pickup truck and suddenly your steering wheel shimmies like it's trying to escape your hands at 70 mph, then you already know what tire imbalance feels like.

Interco Tire Corporation builds Super Swamper tires, which are famous for being some of the strongest and best-working tires off-road. "Swampers," as they're affectionately known to the aficionado, ...