Driving on studded snow tyres. If studded tyres are installed on the front of any vehicle, they must also be installed on the rear.

The beginning of movement and acceleration of any vehicle in snow, ice and other adverse cold weather conditions is highly dependent on the traction qualities of the tyres on the driving axle. The controlled handling and braking of a vehicle after it is in motion in adverse weather conditions, however, is highly dependent on the traction of the rear tyres. Consequently, the rear tyres of any vehicle must have equal or higher traction capabilities than the front tyres for safe vehicle operation.

Because of the higher traction qualities of studded snow tyres under most winter weather conditions, installation of only two studded snow tyres on the front of any vehicle (especially front wheel drive vehicles) without two studded snow tyres on the rear can cause adverse (unsafe) handling characteristics. Consult tyre manufacturer for correct stud size. If you sell and/or install studded snow tyres on vehicles you must follow the procedures listed below:

Only new tyres should be fitted with studs. Never insert studs in a used tyre (even if only slightly used).

Without studded snow tyres on the rear, which have the same traction qualities as the studded front tyres, adverse (unsafe) handling and braking characteristics are introduced into the vehicle. This may result in loss of vehicle control, which could cause serious injury or death.

If studded snow tyres are installed on only the rear of any vehicle, it is recommended (but not required) that they be installed on the front. Only if studded tyres are installed on all wheel positions of a vehicle will optimum handling characteristics be achieved