Quote:
Originally Posted by NickelB NL
On the bike thing. Why do speedcyclist have skinny tires and not the (safer) wider tire. More contact means more energy needed to move it. In your story I could mount a 365 tire and still use the same amount of energy.
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I think what is going on here is that skinny tires use very high inflation pressures - and it's the inflation pressure that reduces the rolling resistance. But as was said, at the same pressure, the wider tire is better.
And using your example, if you could fit a 365 to your vehicle, it would be better for RR at the same pressure, but there would be other problems that would make that choice unsuitable. But if you reduce the pressure to solve some of those problems, then the RR goes downhill.