Time Trial / Time Trialling / TT

Does Crr increase in the same way as wind resistance as speed increases?

C_rr is a coefficient, like C_dA. The power needed to overcome rolling resistance is the product of C_rr, load and speed.

Because of the different relationship, the optimal tyre, after balancing C_rr and C_dA, could be different at different speeds, e.g. a fast rolling but poor aero tyre could be better at low speed, but a slow rolling but aerodynamically slick one could win out at high speed.

Obviously, what we really want is one tyre to rule them all; the ride and handling of the Open Corsa Evo, the strength, durability and aero performance of the GP4000S and the low C_rr of the Veloflex Record, preferably all wrapped up in an an ultra light weight proper UST tubeless package. With a cherry on top.