D
Deleted member 1258
Guest
seriously, 23, 25 or 28, they all feel the same to me.
Tyre size and speed, 2011 Vs 2017
- Thread starter mustang1
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Tigerbiten
Guru
The worse the surface, the wider the optimal tyre width is for maximum speed.
So carry a couple of spares of different widths so you can keep changing to the optimal width as road conditions alter, you'll be able to ride faster that way ..........
So carry a couple of spares of different widths so you can keep changing to the optimal width as road conditions alter, you'll be able to ride faster that way ..........
Cronorider
Well-Known Member
I do not notice a difference is in speed between 23 and 25 but the 25s are a bit more comfy to ride on some of the rough roads around here
[QUOTE 4984726, member: 9609"]is wider only faster when you have the same pressure in them?
with the rub being either the tyre won't take the pressure or the rim won't handle that pressure on a wider tyre.[/QUOTE]
I believe that it’s the opposite. The speed gain is by being able to run a wider tyre at a lower pressure and thus absorbing more of the uneven road surface rather than the tyre bouncing on it.
The smoother the surface the lower the gain I guess.
with the rub being either the tyre won't take the pressure or the rim won't handle that pressure on a wider tyre.[/QUOTE]
I believe that it’s the opposite. The speed gain is by being able to run a wider tyre at a lower pressure and thus absorbing more of the uneven road surface rather than the tyre bouncing on it.
The smoother the surface the lower the gain I guess.
[QUOTE 4984985, member: 9609"]Am I getting speed mixed up with rolling resistance ?
On typical road surfaces the higher the pressure reduces rolling resistance and the wider the tyre also reduces resistance providing it is at the same pressure - but are we talking about how fast it can go regardless of resistance ?
EDIT;
the graph on this page shows I'm wrong
https://roadcyclinguk.com/how-to/maintenance/the-importance-of-tyre-pressure.html/3
the lowest rolling resistance was the widest tyre that was being run at a lower pressure than the thinner tyres.
the thinner tyres are sometimes the best choice though as they have less mass and aerodynamic drag.[/QUOTE]
That’s the recent thinking, yes.
I think you’re right that thinner tyres can be faster in certain circumstances though.
On typical road surfaces the higher the pressure reduces rolling resistance and the wider the tyre also reduces resistance providing it is at the same pressure - but are we talking about how fast it can go regardless of resistance ?
EDIT;
the graph on this page shows I'm wrong
https://roadcyclinguk.com/how-to/maintenance/the-importance-of-tyre-pressure.html/3
the lowest rolling resistance was the widest tyre that was being run at a lower pressure than the thinner tyres.
the thinner tyres are sometimes the best choice though as they have less mass and aerodynamic drag.[/QUOTE]
That’s the recent thinking, yes.
I think you’re right that thinner tyres can be faster in certain circumstances though.
