ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAE
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Alternative location:
https://www.cyclingapps.net/calculators/surface-calculator/
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VALIDATION
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FFT: Find Optimal Tyre Size for any Surface
rim
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(aka Riding Surface <> Tyre Matcher)
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15.5
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>> helps you work out the best tyre for each riding surface by rolling resistance (as well as weight / rim size) <<
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ps. be careful not to exceed tyre recommendations16.5
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Your weight (with bike & equipment) 75kg17.5
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18
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Do you have preferred Tyre Width? mm18.5
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19
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Internal Rim Bead Width/Size (default is 22c)
25mm (c)19.5
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2020
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External Rim Width (leave BLANK if Unknown)
32mm (c)20.5
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if you don't know your wheel width then our guess is >>
28.9mm21
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closest tyre that will "blow up" to match this rim is about >>
30.7mm21.5
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perhaps corresponding to the following
Specialized S-Works Turbo TL 26C
<< experimental
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23.5
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Enter Surface Conditions (% or ratio or distance)
Distance on 0 to 100 scale
Severity24
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24.5
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25
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Amount of Gravel/Off Road..... 100severe25.5
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#N/A26
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26.5
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Amount of Cobbles..... 0027
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#N/A27.5
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28
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rough tarmac..... 028.5
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#N/A29
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29.5
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average tarmac..... 030
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#N/A30.5
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31
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Super smooth tarmac..... 31.5
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#N/A32
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32.5
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Your overall surface is described as…………..
Challenging33
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#N/A33.5
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34
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34.5
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For this surface, your rim & your weight recommend tyre is
#N/Amm
alternative calc:
35
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#N/A#N/Apsi
https://fft.tips/pressure
35.5
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At this size & pressure ...then contact patch will be about
#N/Amm236
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At this pressure, we estimate your tyre will actually measure...
#N/Amm36.5
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37
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vs your choice...
37.5
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but you self-selected a tyre size of mm
No Selection
mm38
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At this size (No Selectionmm) ...then pressure should be about
No Selectionpsi38.5
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At this size & pressure ...then contact patch will be about
No Selectionmm239
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At this pressure, we estimate your tyre will actually measure...
#VALUE!mm39.5
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We invite you to Join:
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https://fft.tips/surface
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Related Sheets
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https://fft.tips/pressure2
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https://fft.tips/tyre2
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