Find optimal tyre by surface conditions_[quick link fft.tips/surface]

	A	B	C	D	E	H	I	AE
1	Alternative location:		https://www.cyclingapps.net/calculators/surface-calculator/
2								VALIDATION
3		FFT: Find Optimal Tyre Size for any Surface						rim
4				(aka Riding Surface <> Tyre Matcher)				15
5								15.5
6			>> helps you work out the best tyre for each riding surface by rolling resistance (as well as weight / rim size) <<					16
7			ps. be careful not to exceed tyre recommendations					16.5
8								17
9			Your weight (with bike & equipment)	188	lbs			17.5
10				85.5 kg				18
11			Do you have preferred Tyre Width?	32	mm			18.5
12								19
13			Internal Rim Bead Width/Size (default is 22c)	19	mm (c)			19.5
14				20				20
15			External Rim Width (leave BLANK if Unknown)	27.5	mm (c)			20.5
16			if you don't know your wheel width then our guess is >>	24.2	mm			21
17			closest tyre that will "blow up" to match this rim is about >>	26.1	mm			21.5
18			perhaps corresponding to the following	Continental Grand Prix 5000 (25) 2018 (normal inflation) latex	<< experimental			22
20								23
21								23.5
22			Enter Surface Conditions (% or ratio or distance)	Distance on 0 to 100 scale	Severity			24
23								24.5
24								25
25			Amount of Gravel/Off Road.....	0	mild			25.5
26				0% CRR= 0.0181				26
27								26.5
28			Amount of Cobbles.....	0	mild			27
29				0% CRR= 0.0181				27.5
30								28
31			rough tarmac.....	40				28.5
32				40% CRR= 0.0064				29
33								29.5
34			Default: typical tarmac.....	60				30
35				60% CRR= 0.0056				30.5
36								31
37			Super smooth tarmac.....	0				31.5
38				0% CRR= 0.005				32
39								32.5
40			Your overall surface is described as…………..	All Tamac				33
41				ave CRR = 0.00592				33.5
42								34
43								34.5
44			For this surface, your rim & your weight recommend tyre is	26.9	mm		alternative calc:	35
45			At this size (26.9mm) ...then pressure should be about	88.4	psi	https://fft.tips/pressure		35.5
46			At this size & pressure ...then contact patch will be about	344	mm2			36
47			At this pressure, we estimate your tyre will actually measure...	28	mm			36.5
48								37
49		vs your choice...						37.5
50			but you self-selected a tyre size of 32mm	32	mm			38
51			At this size (32mm) ...then pressure should be about	79.2	psi			38.5
52			At this size & pressure ...then contact patch will be about	424.1	mm2			39
53			At this pressure, we estimate your tyre will actually measure...	34.5	mm			39.5
54								40
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66			https://fft.tips/surface
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70			https://fft.tips/pressure2
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