Tyre pressures - winter/summer? -ice/leaves?

[Tollers]

I was slipping all over the place today on my way home. Not through oil, manhole covers.....but the yellow lines at the kerb. I'm going to be keeping wide of the kerb for next few months, that was scary.

 

[Fab Foodie]

i refer you to the great late sheldon brown....

http://www.sheldonbrown.com/brandt/ice.html

hi pressure slicks apparently are the correct way.

When the Thames next freezes over I'll be sure to dig out the tubs...

 

[Rohloff_Brompton_Rider]

sounds odd doesn't it, but he makes good points