Can a 25mm width rim wheel use 23mm tires?
11-25-15, 12:15 AM
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Can a 25mm width rim wheel use 23mm tires?
Sorry, this is a newbie dumb questions....
Can a 25mm width rim wheelset use 23mm tires?
Also, what is the benefit of using wider tires 25mm?
thanks in advance
Can a 25mm width rim wheelset use 23mm tires?
Also, what is the benefit of using wider tires 25mm?
thanks in advance
11-25-15, 12:40 AM
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Yes it can. Rims will accept a wide range of tire widths. The advantages of wider tire are lower rolling resistance, a more plush ride mainly by using lower tire pressure and more stability if you are riding off road
12-04-15, 05:40 PM
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Wider tire having lower rolling resistance may not make sense, but this article explains why - Rolling Resistance - Schwalbe Professional Bike Tires
"Why do wide tires roll better than narrower tires?The answer to this question lies in tire deflection. Each tire is flattened a little under load. This creates a flat contact area.
At the same inflation pressure, a wide and a narrow tire have the same contact area. A wide tire is flattened over its width whereas a narrow tire has a slimmer but longer contact area.
The flattened area can be considered detrimental to tire rotation. Because of the longer flattened area of the narrow tire, the wheel loses more of its “roundness” and produces more deformation during the rotation. In a wide tire, the flattened area is shorter in length and does not have so much effect on the rolling direction. The tire stays “rounder” and therefore it rolls better."
and another article on the subject - Resistance is futile: How tire pressure and width affect rolling resistance - VeloNews.com
"Why do wide tires roll better than narrower tires?The answer to this question lies in tire deflection. Each tire is flattened a little under load. This creates a flat contact area.
At the same inflation pressure, a wide and a narrow tire have the same contact area. A wide tire is flattened over its width whereas a narrow tire has a slimmer but longer contact area.
The flattened area can be considered detrimental to tire rotation. Because of the longer flattened area of the narrow tire, the wheel loses more of its “roundness” and produces more deformation during the rotation. In a wide tire, the flattened area is shorter in length and does not have so much effect on the rolling direction. The tire stays “rounder” and therefore it rolls better."
and another article on the subject - Resistance is futile: How tire pressure and width affect rolling resistance - VeloNews.com
12-04-15, 06:13 PM
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The thing most people miss though is at the same inflation. They tend to inflate wider tires less for comfort. Then the wider tire might have an even larger contact area especially when they go to 28s. Most probably wouldn't like riding 28s at 100+ lbs.
12-04-15, 07:17 PM
#8
Bad example
I have 32 mm Compass Cypres tires on two bikes, and I commonly pump those up to 100 or a bit more. I also pump my Vittoria Pavé tires (28 mm) to 110-120. Those tires offer the best ride I can get, without popping for silks.
12-04-15, 07:36 PM
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don't try this at home.
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Yes, I run 23c GP4000 tires on my 25mm (outside width) rims. They measure about 26.7 mm wide when inflated.
That doesn't seem to always be the case. From slowtwitch.com.
Rolling resistance of different size Continental GP4000 tires. Each larger size has lower resistance at the same pressures. And the 23c at 8 bar (116 psi) is about the same as the 25c at 6 bar (87 psi). That's actually a larger difference than I expected.
Rolling resistance does go down for each tire as it's pressure is raised. But the vertical scale doesn't start at zero, so the differences aren't as extreme as the chart seems to show.
Rolling resistance of different size Continental GP4000 tires. Each larger size has lower resistance at the same pressures. And the 23c at 8 bar (116 psi) is about the same as the 25c at 6 bar (87 psi). That's actually a larger difference than I expected.
Rolling resistance does go down for each tire as it's pressure is raised. But the vertical scale doesn't start at zero, so the differences aren't as extreme as the chart seems to show.
12-04-15, 07:36 PM
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Considering the Cypres tires are only rated for 90PSI max, you like living dangerously...and frequently visiting your dentist.
12-04-15, 07:52 PM
#11
Bad example
