Can Michelin R18 and ZR18 be used interchangeably?

[DelLilah]

Michelin R18 and ZR18 generally cannot be interchanged. If the car is driving at high speeds, they cannot be swapped, but they can be at low speeds. Tire Introduction: R indicates that the tire is designed for use at speeds up to 170 kilometers per hour. This specification is now relatively rare. ZR represents all high-speed tires capable of operating at speeds exceeding 240 kilometers per hour. Tire Model Markings: On the sidewalls of different tires, letters indicate the speed rating of the tire. J, K, L, M, N, P, Q, R, S, T, U, H, V, W, Y, Z are the letters corresponding to the speed ratings of radial tires, where J to Y represent 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 240, 270, 300 kilometers per hour, and Z represents speeds above 240 kilometers per hour.