Originally Posted by
B. Carfree
It looks like another drum test. If you're commuting on a velodrome track, then the test is relevant. If you ride on real roads, it misses suspension losses and will fail to reward tires with supple side walls/penalize tires with stiff sidewalls.
Yes, it is a drum. He's used diamond plate on the drum to try for a little more realism, but there are a lot of things he doesn't claim to measure... also like quality of traction, service life, or real-world durability.
In your post above, the part in bold, you've essentially said that all tires would be marked down, and I don't think that's what you meant. But I can't tell which you meant from context. Can you please write back and clarify?