Final answer:
The 2020 370Z Coupe's summer performance tires with a W-speed-rating are designed for speeds up to 168 mph. The tire's friction is crucial for maintaining control at high speeds, especially on steeply banked or sharp curves.
Step-by-step explanation:
The W-speed-rating on tires indicates the maximum speed that the tires are designed to handle under specific conditions. For the 2020 370Z Coupe's summer performance tires with a W-speed-rating, this would be up to 168 mph (miles per hour). The speed capability is linked to tire friction, which enables a vehicle to take curves at higher speeds due to the grip between the tire and the road surface. This gripping ability is particularly important on steeply banked or sharp curves, where higher speeds can be maintained without losing control due to the increased centripetal force that is required to keep the vehicle on its path.
Considering the impressive land speeds mentioned, such as 900 km/h or approximately 560 mph, it's clear that the W-speed-rated tires are not intended for such extreme speeds which are well beyond typical highway speed limits and below the world record speed. Furthermore, the number of revolutions a tire makes, such as an automobile tire traveling 80,000 km before wearing out, can be calculated based on the circumference of the tire, without accounting for the change in radius due to wear or reversing the vehicle.