1995 Pontiac Grand Am Owner's Manual - Page 159

Hydroplaning Hydroplaning is dangerous. So much watercan build up under your tires that they can actually ride on the water. This canhappen if the road is wet enough and you're going fastenough. When your vehicle is hydroplaning, it has little or no contact with the road. Hydroplaning doesn't happen often. But it can if your tires haven't much tread or if the pressure in oneor more is low. It can happenif a lot of water is standing on the road. If you can see reflections from trees, telephone poles, orother vehicles, andraindrops "dimple" the water's surface, there could be hydroplaning. Hydroplaning usually happens at higher speeds. There just isn't a hard and fast ruleabout hydroplaning. The best advice is to slow down when israining. it Some Other Rainy Weather Tips 0 Turn on your low-beam headlamps-- not just your parking lamps -- to help make you more visible to others. Besides slowing down, allow some extra following distance. And be especially careful when you pass another vehicle. Allow yourself more clear room ahead, and be prepared to have your view restricted by road spray. Have good tires with proper tread depth. (See "Tires" inthe Index.) 0 0 4-16