Quote:
Originally Posted by SDMCF
Why? (From an MPG point of view)
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I have not researched this idea myself, but some say that the wider (and shorter in length) contact patch forces the tire to deform less while providing the same total area of contact. In other words, all other things being equal, a wider tire might reduce rolling resistance because the rubber doesn't have to bend as much to provide the same square inches of contact with the road.
The trade-off is that the wider profile is less aerodynamic, which becomes an increasing factor with increasing speed.