20-02-2021, 07:50 PM
(This post was last modified: 20-02-2021, 08:12 PM by Ian McGowan.)
Hi Peter, I think you will find that information, albeit formatted in terms of revs per mile, in appendix 2 of Bill Williams "Austin 7 Specials" book. Also, if you visit the Longstone Tyres website they list nominal diameter but not rolling diameter for all makes and sizes that they stock.