Lower pressure but increased crr from picking the water up on the tyres/moving through the surface water
increased crr from picking the water up on the tyres/moving through the surface water
Or reduced Crr from water lubrication of the tyre squirm. I think that effect dominates for thin layers of water, so in most cases a wet road is faster.
@gbj_tester started
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Lower pressure but increased crr from picking the water up on the tyres/moving through the surface water