Fitter Radio Episode 415 - Sun Sachs
Fitter Radio Triathlon Podcast
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Tire Selection & Pressure for Cycling Performance
- Consider rolling resistance, primarily determined by tire system flexibility (casing and tread).
- High thread count casings have smaller contact areas and flex easier, but brands achieve flexibility differently (e.g., Continental: thick tread, thin sidewalls vs. Vittoria: thin tread, tougher sidewalls).
- Consider the surface factor; rougher surfaces magnify rolling resistance. Smooth drum tests don't reflect real-world conditions, especially rough courses like Ironman New Zealand.
- Slightly underinflating tires can be better than slightly overinflating, due to the breakpoint where rolling resistance increases with higher pressure on rough surfaces.
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