<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong>Please explain why dragsters and F1 cars have the widest tyres going??
Surely the wider the tyre, the more surface area is in contact with the road, so there is more grip.
Slick tyres have the most grip because they have more rubber in contact with the ground.
We are not talking about cornering or handling dynamics, just straight forward grip. When it is wet or snowy, thinner tyres are less prone to aquaplaning because there is less surface area.</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">I dont wanna offend anyone or be a smart-arse here but you just need to undust the school physics books.
Friction force is given from the following formula:
T = n*Fk
where T = friction, n = coefficient of friction, Fk is the vertical to the surfaces force (in our case the car's weight). The n coefficient depends only on the surfaces characteristics.
The fact that on drag races have huge tyres is based on temperature handling and not the grip. The fatter the tyre, the more it stays warm, it has to do with the temperature spread mechanism. And there is one reason, spinning, they cant have tiny tyres to spin, they need big amount of rubber so the tyre doesnt change geometry by excessive wear.
No matter what you believe or want to believe, size doesnt count on grip.