Winter Tyre Pressure

[Grainfoot]

62psi recommended pressure should I run winter tyres at same pressure. Noticing that wheels are spinning on gentle slopes with good winter tyres on nokian c3. Should I reduce pressure .

 

[mmi]

I have stayed with recommended pressure. I don't think that reducing pressure makes any noticeable difference (to better) on icy/snowy roads what comes to the grip at normal travelling speeds.

 

[Dieseldonkey]

Is your van fully loaded? If not I'd maybe run the pressure at VWs minimum recommended pressure for the load being carried. Both static and sliding friction between a tyre and smooth ice is completely independent of its surface area, at a microtextre level.

However the tyres ability to deform and wrap around larger chunks of ice at a macro level, may benefit from a lower tyre pressure. This would help the tyre to put down a tractive force where your driving with these types of conditions.