Winter tyres maximum speed ratings are as follows:
Q rated tyres: 99mph
T rated tyres: 130mph
H rated tyres: 149mph
V rated tyres: 149mph
ZR rated tyres: 150mph and over
If your vehicle is capable of travelling above the speed rating of your winter tyre you are legally required to have a sticker, usually placed on your windscreen to remind you and the police of the maximum rated speed of your tyres.