[the-spanner]

I found that the diameter is 630mm for a 180/55-17 BT-016
630mm x (pi) = 1979.2mm (overall circumference)

I think this is correct..? hope this helps.. what do you need this for anyway?

 

[the-spanner]

hey, the front wheel diameter is 602mm so the circumference should be 1891.2mm
on the Bridgestone website the diameter along with some other dimensions are mentioned but not the overall circumference.. unless I missed that also!