Ideal Bike Tire Pressure

	A	B	C	D	E	F	G	J	K	S	T	U	V	W	X	Y	Z
1	Edit values in yellow						DO NOT ADD COMMENTS
2	Your tire width			mm			DO NOT CHANGE THE FORMATTING	From:	https://www.renehersecycles.com/science-and-bicycles-1-tires-and-pressure/
3	Your tire width		4.33	in			SERIOUSLY, STOP ADDING COMMENTS
4	Your tire load		110	kg	PER TIRE		STOP CHANGING FORMATTING
5	Your tire load		#REF!	lb			EVEN Cameo Marion			All the math is over here
6	Your ideal pressure *		#REF!	PSI			DO NOT ADD SHEETS
7	Your ideal pressure *		#REF!	bar			YOU CAN SAVE YOUR OWN COPY				30	70	#REF!
8	* Estimated pressure for 15% tire drop. Load is per tire.									20 mm	78.7	200.1
9		Load (kg)								23 mm	66.0	165.0
10		30	55	65	70					25 mm	55.0	141.0
11	Tire width	Pressure	Pressure	Pressure	Pressure	Slope				28 mm	48.0	117.2
12	(mm)	(PSI)	(PSI)	(PSI)	(PSI)	PSI/kg				32 mm	38.0	91.1
13	20	78.7	154.6			3.04				37 mm	30.4	68.4
14	23	66.0		152.6		2.47				110 mm (your width)	7.3	14.5
15	25	55.0			141.0	2.15				Your point			#REF!
16	28	48.0			117.2	1.73
17	32	38.0			91.1	1.33
18	37	30.4			68.4	0.95						623.2944661				10.52547481
19												19441.84243				1035.084829
20												0				0
21											Original Data	Fit Y=A/X²+B/X	Your point		Original Data	Fit Y=A/X²+B/X	Your point
22										20	78.7			20	3.04
23										23	66.0			23	2.47
24										25	55.0			25	2.15
25										28	48.0			28	1.73
26										32	38.0			32	1.33
27										37	30.4			37	0.95
28										110			7.3	110			0.18
29										18		94.6		18		3.78
30										20		79.8		20		3.11
31										22		68.5		22		2.62
32										24		59.7		24		2.24
33										26		52.7		26		1.94
34										28		47.1		28		1.70
35										30		42.4		30		1.50
36										32		38.5		32		1.34
37										34		35.2		34		1.20
38										36		32.3		36		1.09
39										38		29.9		38		0.99
40										40		27.7		40		0.91
41										42		25.9		42		0.84
42										44		24.2		44		0.77
43										46		22.7		46		0.72
44	Confirm that plots line up									48		21.4		48		0.67
45										50		20.2		50		0.62
46										52		19.2		52		0.59
47										54		18.2		54		0.55
48										56		17.3		56		0.52
49										58		16.5		58		0.49
50										60		15.8		60		0.46
51										62		15.1		62		0.44
52										64		14.5		64		0.42
53										66		13.9		66		0.40
54										68		13.4		68		0.38
55										70		12.9		70		0.36
56										72		12.4		72		0.35
57										74		12.0		74		0.33
58										76		11.6		76		0.32
59										78		11.2		78		0.31
60										80		10.8		80		0.29
61										82		10.5		82		0.28
62										84		10.2		84		0.27
63										86		9.9		86		0.26
64										88		9.6		88		0.25
65										90		9.3		90		0.24
66										92		9.1		92		0.24
67										94		8.8		94		0.23
68										96		8.6		96		0.22
69										98		8.4		98		0.22
70										100		8.2		100		0.21
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