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 Tyre Calculation
The dynamic wheel-radius cannot be determined from the tyre description, indeed, the radius/diameter can. The precision is limited, because in the case of, e.g., the tyre-width, we're dealing with a grid dimension.
Regardless of whether the tyre is 209 mm or 201 mm wide, the tyre always has the description '205'.
Wheel
diameter | | Tyre height | | Rim diameter |
| Top to bottom | Tyre
width | | Ratio
height to width
| | Inch -> mm |
dR | = | 2· | b | · | h/b
100 | + | dF·25,4 |
dR: Tyre diameter in mm, cm, dm, m
b: Tyre width in mm, cm, dm, m
h/b: Ratio from height to width in percent
dF: Rim diameter in inch
160/60 ZR 17
b = 160 mm; h/b = 60; dF = 17 Zoll 205/65 R 15 86T
b = 205 mm; h/b = 65; dF = 15 Zoll
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Translator: Don Leslie -
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