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The BMW Range
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accident
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<blockquote data-quote="Schwepps" data-source="post: 179670" data-attributes="member: 3592"><p>Just have to set the record straight here:</p><p>Your equation aside, friction is also a function of the force pushing two surfaces together (and the roughness of the surfaces) By your own analogy of F1 cars, they have greater traction because their weight is disproportionate to their mass due to the downforce from their aerodynamics.</p><p></p><p>So weight plays a big part in hydroplaning. A Kancil will hydroplane more easily than an S80, which will hydroplane more easily than a cement truck, all going at the same speed through the same sheet of water.</p><p></p><p>Having said that, I've hydroplaned an S80 many times <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> The last thing I would do in a skidding situation like that is to touch the brakes at all, much less to hit them so hard that the ABS kicks in! If you're in ABS braking mode and some wheels have grip and others are hydroplaning, you're guaranteed to have a very theatrical spin. ABS or lack of ABS has nothing to do with getting into or out of a hydroplane situation.</p></blockquote><p></p>
[QUOTE="Schwepps, post: 179670, member: 3592"] Just have to set the record straight here: Your equation aside, friction is also a function of the force pushing two surfaces together (and the roughness of the surfaces) By your own analogy of F1 cars, they have greater traction because their weight is disproportionate to their mass due to the downforce from their aerodynamics. So weight plays a big part in hydroplaning. A Kancil will hydroplane more easily than an S80, which will hydroplane more easily than a cement truck, all going at the same speed through the same sheet of water. Having said that, I've hydroplaned an S80 many times ;) The last thing I would do in a skidding situation like that is to touch the brakes at all, much less to hit them so hard that the ABS kicks in! If you're in ABS braking mode and some wheels have grip and others are hydroplaning, you're guaranteed to have a very theatrical spin. ABS or lack of ABS has nothing to do with getting into or out of a hydroplane situation. [/QUOTE]
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