Originally Posted by Evil Monkey
I'm not sure if that's true. I thought that initially but from some looking around on the internet, some made the case that while the tire is wider, the contact patch stays about the same because it's the weight of the vehicle that determines the patch size. The patch become wider but it's not as long as a skinnier tire.
there are two factors to contact patch 1 is vehicle weight the other is tire pressure. at proper tire pressure the narrow tires have less contact patch. the pressure or weight is more concentrated. think about a bicycle. two people weigh the same amount. one is a road bike with skinny tire and the other is a mountian bike. the mountain bike works better in sand becuase it has more contact wider, street bike has skinny tires and suck in sand. skinny. Even though the same weight. Mt bike has 60psi road bike 100+psi therefore contact patch is different
point is it takes fewer psi in a wide tire to have flat contact.
Skinny road tires require higher pressure to support vehicle weight properly. with highly inflated tires the length of the contact patch should be the same as a wider tire the same diameter.