One of the first applications of para-aramid (Kevlar ®, Twaron ®, Technora ®) was the replacement of steel wire in the carcass of large truck tires, racecar tires and tires of aircrafts. Especially for heavy duty trucks the use of aramid provides significant benefits compared to steel wire:
Aramid is nowadays also used in more expensive bicycle tires.
Fabrics reinforced with Vectran ® are lightweight, extremely durable, have a reliable life span and are five times stronger than steel. Sidewall reinforcement with Vectran ® offers protection against cuts and abrasion. The Vectran ® breaker wards off flats but is also supple for less rolling resistance and greater comfort than two layers of Nylon puncture resistant barriers.