HOW SNOW CHAINS GRIP

Alpine News - - News -

In or­der for wheel chains to work ef­fec­tively, and to pro­vide the max­i­mum amount of trac­tion and brak­ing, chains must pen­e­trate into a com­pacted snow on the road sur­face. Wheel lock up can oc­cur when the snow chains are used on a ‘black road’. This oc­curs when the icy sur­face be­gins to break up or melts and the ve­hi­cle can slide on the wheel chains un­der hard brak­ing. Please refer to the snow chain sec­tion of your ve­hi­cle owner’s man­ual for fur­ther ex­pla­na­tion. Wheel chains fit­ted to sum­mer tyres on the front wheels will in­crease trac­tion for take off, for driv­ing and for brak­ing but can­not as­sist with ve­hi­cle’s lat­eral sta­bil­ity. Be­cause of the in­ad­e­quate grip of sum­mer tyres on the rear the ve­hi­cle it will over­steer and when brak­ing the ABS sys­tem can be ac­ti­vated, fur­ther in­creas­ing the stop­ping dis­tance. The prob­lems are al­ways worse when driv­ing down­hill than uphill. Wheel chains fit­ted to sum­mer tyres on the rear wheels will in­crease trac­tion for take off and driv­ing but can­not as­sist with steer­ing, brak­ing or lat­eral sta­bil­ity. Be­cause of in­ad­e­quate grip of sum­mer tyres on the front of the ve­hi­cle it will not ‘turn in’ and will un­der­steer. When brak­ing the ABS sys­tem can be ac­ti­vated, fur­ther in­creas­ing the stop­ping dis­tance. Again, the prob­lems are al­ways worse when driv­ing down­hill than uphill.

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