Will 25c tires wear out faster versus 28c for hard riding?
10-03-22, 08:23 AM
#26
pan y agua
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[QUOTE=popeye;22662491]
I don’t think that’s correct. How fast you can stop a vehicle depends on the size of the contact patch with the road, and the coefficient of friction. Assuming the same tire compound, and both tires braked just short of locking, the larger contact patch on the 32 should generate more stopping force than the 23.
Admittedly, spreading the weight out over a larger contact patch will affect the amount of friction, but I’m betting the larger contact patch will trump any such effect.
This Global Cycling Network “test” tends to confirm what physic would predict: the bigger contact patch of bigger tires leads to shorter stopping distances.
https://www.globalcyclingnetwork.com...es-science-ish
You know that narrower tires don't stop as well as wider ones, which is why you have to brake earlier and harder even if you were descending at the same speed, right?[/QUOTE
The fastest stop is with the rear tire just off the ground. As you cannot skid a front tire in a straight line on dry pavement without going over the bars a 23 will stop just a s fast as a 32.
The fastest stop is with the rear tire just off the ground. As you cannot skid a front tire in a straight line on dry pavement without going over the bars a 23 will stop just a s fast as a 32.
Admittedly, spreading the weight out over a larger contact patch will affect the amount of friction, but I’m betting the larger contact patch will trump any such effect.
This Global Cycling Network “test” tends to confirm what physic would predict: the bigger contact patch of bigger tires leads to shorter stopping distances.
https://www.globalcyclingnetwork.com...es-science-ish
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
Last edited by merlinextraligh; 10-03-22 at 08:34 AM.
10-03-22, 08:43 AM
#27
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^ Also you can run a 32mm tire at lower pressure than the 23, which will increase the size of the contact patch and shorten stopping distances.
The GCN demonstration was done with constant pressure, if the ran lower pressure in the 32s than in the 25’s the results would have been an even bigger difference.
The GCN demonstration was done with constant pressure, if the ran lower pressure in the 32s than in the 25’s the results would have been an even bigger difference.
__________________
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
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