New larger tires and wheels equipped with larger brakes. Brembo brakes are optional along with 19-inch wheels and performance tires. Most bicycle rims are "clincher" rims for use with clincher tires. Polyurethane is also used in making solid tires and wheels. The wheels were wrapped with Goodyear Gatorbacks, which were the standard Cobra tires. These wheels were shod with Dunlop's latest "M series" racing tires. This system can allow for production of one-piece tires and wheels. ISO 5775 is an international standard for labeling the size of bicycle tires and rims. Adjustments can occur in suspensions, brakes, transmissions, engines, tires, and many others. Five of the aircraft's eight main wheel tires deflated. The steel treads sit on flat hard rubber tires. These cars feature "Real" "Riders" rubber tires. It is fitted with solid rubber tires. This allows the two rear tires to receive power. These were fitted with Goodyear NCT steel-belted radial tires.