Operation Manual

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Calculating tire circumference
Tire circumference can be easily calculated by
multiplying the tire diameter with 3.1416.
The tire circumference of some standard tire types is
listed in the following table.
Diameter Circumference
20" 1598
22" 1759
24" 1916
26" (650A) 2073
26,5" (Tubular) 2117
26,6" (700x25C) 2124
26,8" (700x28C) 2136
27" (700x32C) 2155
28" (700B) 2237
ATB 24"x1,75 1888
ATB 26x1,4 1995
ATB 26x1,5 2030
ATB 26x1,75 2045
ATB 26x2 (650B) 2099
27"x1 2138
27"x1 1/4 2155
The display now shows the unit of distance
SET KM / EINST KM / AJUSTE KM
SET KM / REG KM / AJUST KM
Select the unit miles (M) or Kilometres (KM) by
pressing B. Confirm your setting by pressing A.