AMuzi wrote:

How do I measure a rim in order to find out
what tire (clincher) will fit?

Both practically (how to get the size) and
then how to convert it into suitable tire
designations/dimensions?


If there are no markings and no tire is
fitted,

Right, that's the situation for a stack of
rims...

you can measure the outside diameter minus
(depth from lip to tire seat x2) /2 which give
you the effective radius from which to solve
for circumference.

Great, you have a trick for getting the OD,
because of the rims being bulged at the center
obstructing measure tape, ruler, or a
folding rule? Put it against a wall and make
a mark?

584mm=F9, 650B
590=EA3
597=EA1
622=700C
630=K2, 27
635=F4 and so on.

also starring:

590 = 650A
635 = 700B

But what are F9, EA3, EA1, K2, and F4?

--
underground experts united
http://user.it.uu.se/~embe8573