If the replacement tyre is not speed rated, the speed capability of the vehicle is limited by the speed capability of the replacement tyre.

When replacing tyres, consult the placard (normally located on a door frame, door edge, or glove box door) or the owner’s manual for correct size. If the tyres shown on the vehicle placard do not have speed ratings, the appropriate size tyre with any speed rating may be applied.

When the placard tyre size contains a speed symbol, for example P205/60HR15 or P205/60R15 90H, the replacement tyre must have the same or higher speed rating symbol if the speed capability of the vehicle is to be maintained. If the replacement tyre is not speed rated, the speed capability of the vehicle is limited by the speed capability of the replacement tyre.

Speed       Category

*S          180 km/h (112 mph)
*T          190 km/h (118 mph)
*U          200 km/h (124 mph)
*H          210 km/h (130 mph)
*V          240 km/h (149 mph)
*W         270 km/h (168 mph)
*Y          300 km/h (186 mph)

* Based upon indoor wheel tests conducted in accordance with the Procedure for Load/Speed Performance Tests of the Economic Commission for Europe (ECE-30).

** For tyres having a maximum speed capability above 240km/h (149 mph), a “ZR” may appear in the size designation.

Example:

Tyre Designation        Maximum Speed

P275/40R17 93W         270 km/h (168 mph)
P275/40R17 93Y          300 km/h (186 mph)
P275/40ZR17 93W       270 km/h (168 mph)
P275/40ZR17 93Y        300 km/h (186 mph)