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Old 06-24-20, 01:04 AM
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Yeah the improvements that come from wider tyres on the road right now are due to the tyre almost providing a small suspension by it deforming to the changes in the road. It keeps the wheels from moving too much vertically, providing more confidence to push on and a slight measurable gain in traction for putting the power down. If your track is decent these are unnecessary. They also don't need stiffness in 45 degree banking

Someone will know better than me, but the assumption now is that the tyre for track is basically whatever one provides the best aero benefit with your wheel. So because rim widths have increased this is making the 19mm rarer? (Edit: Yeah what BP said)
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