Is a wider tire with lower pressure faster?

Yes. By creating a wider tire bead interface in relation to the outside rim width, we can offer a more aero rim-to-tire transition. A wider tire bead interface also allows for a wider tire, which allows for lower tire pressure. Lowering tire pressure can increase overall system efficiency, reduce rider fatigue, and offers better handling in rough conditions. A wider rim shape paired with a wider tire promotes less rolling tire deflection, resulting in lower rolling resistance.