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Message: <blockquote data-quote="Iylia H" data-source="post: 465304" data-attributes="member: 18548">it's simple physics... the wider the tyre, the larger is the base for the weight of the car to be distributed. thus, less force acting down on the road. The narrower it is, the higher is the force acting down on the road.The narrower it is, the easier it cuts through the water, like how a blunt knife compare to a sharp knife when cutting a block of butter.. However, if tyres are too narrow, you will also not get enough grip when driving on dry roads, as there are less contact point with the road. which equals to less friction (reason why sprint bikes in the velodrome have very thin tire compared to those in mountain biking) so the rule of thumb is, know how your tyre behaves.. and don't push it beyond its limit.</blockquote>