So we all know how car tires are less grippy when it’s wet.
But why is it better to use water or saliva on my fingers when trying to open a plastic bag, or quickly turn paper pages over?
And why does applying washing soap/shower gel to my slippery yoga mat make it grippy again?
Does this means car tires would be grippier on a soapy surface? Is so do they apply this principle in (for example) motorsports?
Thanks in advance folks!