Potentially interesting reading on the subject:
<http://www.classiccar.com/articles/content/index.php?/archives/21-A-Tale-of-Two-Tires.html>
<http://www.carbibles.com/tyre_bible_pg2.html>
And for whatever it's worth, I looked at stacks of Herald and Spitfire rims,
all of which originally had tubeless tires, and none has any special additional
'channel' for the bead, although I think most modern rims nowadays do (didn't
have a bare one handy to check).
And completely on-topic: I ran my '60 TR3A for several years on "oversize" 6.85
x 15 bias-ply (Volvo wagon size) tubeless tires...because there were two good
ones on the car when I bought it, and I was able to obtain two matching tires
(Dunlop, of course!) to complete the set. This was back in 1972; I didn't have
$200 for a set of five Michelin "X" radials at the time, college being what it
was and all.... ;-) (Besides, I'd only paid $125 for the car!)
--Andy Mace
*Mrs Irrelevant: Oh, is it a jet?
*Man: Well, no ... It's not so much of a jet, it's more your, er, Triumph
Herald engine with wings.
-- Cut-price Airlines Sketch, Monty Python's Flying Circus (22)
Check out the North American Triumph Sports 6 (Vitesse 6) and Triumph Herald
Database: http://triumph-herald.us
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