- Aerocoach who also regularly test their aero: https://www.aero-coach.co.uk/time-trial ... tance-data
- BRR with the known limitation of not really measuring vibration losses (so always show higher pressure = lower RR): https://www.bicyclerollingresistance.com/
- Cycle et Forme who built a protocol that is nicely calibrated to the two others https://www.cyclesetforme.fr/
- Wheel Energy is used by some manufacturers, and do include the impedance losses but they don't share data themselves https://wheelenergy.com/bicycles/
Aerocoach recently released a test on the not so popular anymore tubulars, really track oriented, but interesting to see how fast latest tubularsare compared to the TT only TLR... and they are fast. Not all are usable on the road but the Veloflex Record is usable as a race-day only (similar to a Corsa Speed that is even lighter 225/205g).
https://www.aero-coach.co.uk/tubular-tr ... resistance
![Image](https://lirp.cdn-website.com/035638ef/dms3rep/multi/opt/TrackCRR220523-1920w.png)
Long story short, @iso pressure they are faster than the VeloFlex Record Clincher and would be <20w of RR
![Image](https://lirp.cdn-website.com/035638ef/dms3rep/multi/opt/CRR-chart-190523-1920w.png)