On 13/02/2019 18:12, Robin wrote:
On 13/02/2019 17:57, NY wrote:
"Robin" wrote in message

depends on wheel/tyre of course but I was reckoning on tread going from
8mm to 2mm on a tyre of around 180mm circumference.

Or of course misreckoning if others get different answers



What do you drive? A Dinky toy?