Originally Posted by
noisebeam
The squished rubber actually moves faster than the rest of the circumferential rubber!
Anyway, theory and calculations aside, roll out and distance measurement tests I've done confirm a difference for both load and psi on circumference and distance accuracy. Even a 10psi delta on tire can change measured distance by about 0.25% - that can make or break actually completing a century.
The people who calculate the various errors in electronic distance measurement in regard to tire pressure deltas are the people who express interest in this ad
