[alfa] An Actual Formula for Calculating Tire Diameter

[Tom Lesko <tmlesko@xxxxxxxxxxx>]

If anyone wants to exercise their brain instead of their computer's 
brain:

Ref. Centerline catalog, pg.54
http://www.centerlinealfa.com/tips/tips8b.html

(cross section width  X  aspect ratio)  X  2
__________________________________ + wheel diameter = tire diameter
                            25.4

The aspect ratio is expressed as a decimal, ex:  "0.78"

Tom Lesko
Hingham, MA usa
Architect, not an engineer
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