Alistair Bell wrote:

> My, ahem, theory is that the "X" is Michelin's name/code for not only a
> particular tire but the method of carcass construction/belt wrapping. All
> started with the original passenger tire as used subsequently on all the
> derivatives.

Absolutely right. Michelin invented the radial tyre in the 1940s, and X stands
for radial. So practically all their tyres since then would have an X in the
name.

David Marshall could be right too. The tyres designated just 'X' that I've seen
here in Holland have always been on shovels and draglines and have a very basic,
rough profile.

Robin
90 Vanagon Atlantic Westfalia TD