I’m thinking they would feel remarkably faster than the Roubaix Pro. Interesting that the GP is thicker than the Speed King CX, the TL even more so (also the TL in more puncture resistant). I wonder if how the TR and TL compare in the struggle to mount them? Looks like they have similar wet grip according to BRR.
I wish BRR had a test of the Tufo Speederos in 36, I have the Thunderos in 40 and if there is a similar drop in rolling resistance in the Thundero from 40 to 36 as the Terra Speed, the 36 would be ~20.4w… If the Speedero is faster, than it may be <20w in 36c.
Would also be interesting to know how the 32C Grandprix 4 Season rolls. If it roughly doubles in rolling resistance from 25c to 32c both it and the PZero 4S (doesn’t exist in 32C yet) that I enjoyed would be pretty slow ~29w.
Which ones did you try specifically and how did they compare outside of rolling resistance but in wet grip on asphalt and behaviour in rougher terrain and gravel?