Originally Posted by
meanwhile
It's also damn hard to get more than minute aero improvements, but racing tyres of the same width vary by about 40% in RR.
Hmmm. Do you have any numbers to hang on that?
I feel about 1 gear's worth of difference riding on my handlebar tops or in the drops. That's quit a bit. Tires I don't know how to quantify.
Percentages can be misleading when you're talking about small numbers. 2 grams is 100% more than 1 gram but I challenge you to subjectively tell the difference.