For better traction, the Corvette has larger standard tires than the Z4 (F:245/35R19 & R:305/30R20 vs. F:225/45R18 & R:255/40R18). The Corvette Z06’s tires are larger than the largest tires available on the Z4 (F:275/30R20 & R:345/25R21 vs. F:255/35R19 & R:275/35R19).
The Corvette’s standard 245/35R19 front and 305/30R20 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) that provides a stiffer sidewall than the Z4’s standard 45 series front and 40 series rear tires. The Corvette Z06’s 275/30R20 front and 345/25R21 rear tires have a lower 30 series front and 25 series rear profile than the Z4’s optional 35 series tires.
For better ride, handling and brake cooling the Corvette has standard 19-inch front and 20-inch rear wheels. Smaller 18-inch wheels are standard on the Z4. The Corvette Z06’s 20-inch front and 21-inch rear wheels are larger than the 19-inch wheels optional on the Z4.
The Corvette has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The Z4 doesn’t offer vehicle monitored tire inflation.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the Corvette can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Z4 doesn’t offer run-flat tires.