Acceptable temperatures (16 to 20
degrees) to do a section comparison on the tires. The 25 23mm vs 25mm tires mm is
very popular at the moment where it is given better performance and better comfort
For this test I will compare the latest Michelin PRO 4
service race in 25 and 23 mm.
I would like to thank
Guillaume from the Matosvélo
website for putting me in touch with Nicolas Cret! an engineer at 23mm vs 25mm tires Michelin who
develops bicycle tires. He sent me a
complete set of Pro 4 tires in 23 and 25 sizes for my tests. They weigh 218g for the 25
and 208g for the 23. That’s to say nothing! I use a light 80g 700*20/25c inner tube
bars.
The location is familiar! the Salbert! a 3!760 km climb at
an average gradient of 5.7%. Temperatures b2b email list range from 15 degrees
at the start to 20 degrees at the end.
climb and fill a water bottle to always have the same climbing weight. Today
at 69.8 kg all-inclusive. I climb at 270 watts! allowing me to move between 18 and 23
km/h! not far from 4.4 watts/kg! which seems to me to be quite representative for the
majority of users.
The first test is carriE out with another large
current tire! the GP400s (190g) having a good volume with a section of 23.8 mm to
give me an idea of the pure performance of the Michelins.
The results are collected in the table below.
Well! we can say that everything is very close!
with barely 1 watt between them all. On high-end tires! none of them takes
the advantage on the climbs. The possible sms marketing has seen exponential growth dispersion of the measurement system prevents me from drawing any
conclusions on such small differences.
repeatability of the results: 270w is about 11’43 s for 69.8 kg and over 5 climbs!
Regarding comfort! I can’t say that I’ve seen
any big differences either. It must be said that the book your list road is in pretty good condition.
at higher speeds and on asphalt with roughness the 25
mm will take the advantage. For my
priority and mountainous practice.