Wet roads today after heavy rain (yesterday and earlier this morning) and when making turns (not high speed, just normal, everyday turn), the rear slides a little. My car has 17" Michelin Primacy RFs, 36psi rear, 34 psi fronts. This surprised me as these tires have a relatively good wet road performance rating, and I believe that this little tire pressure adjustment shouldn't be the problem. Also, when slipping, I wasn't going through any puddles (not hydroplaning), just wet road.