Elan Diffs

[gordonlund]

David
Sorry if I serve to confuse but I did measure the tyre diameters on the garage floor and the comparisons in relative diameter to the percentage change in overall gearing were only meant as a guide which for my simple mind seemed to cancel each other out bar for the odd percent point.

All the best

Gordon

[elansprint71]

For the techis again, the original fitment of tyre to the +2 was the old 165 x 13 which had an aspect ratio of 100%.

Gordon (Rhubarb & Custard)

My local tyre guru once told me that the aspect ratio of cross-ply and "normal" profile radials is/was 80%. A 165 @100% would be a rather large outside diameter, surely? 13" =330mm. 330+165+165= 660mm or 26 inches!

cheers,
Pete.