Can't speak for the TD but on the MGB the critical thing is how the wheel is
mounted on the balancer shaft. Normally they mount the back of the wheel
against a flat surface and put a cone through the centre hole. That's fine
for modern wheels as the centre hole is designed for that purpose, whereas
on MGB stud wheels it's just a hole that was punched through to make space
for the hub nut without much consideration for concentricity or roundness.
It's bad enough with those, but on wire wheels neither of the machined
tapered mounting surfaces are being used, and I've had tyre places point out
a massive wobble with the wheel on their machine that isn't there on the
hub. I've had a pair of cones machined
(http://www.mgb-stuff.org.uk/MGBCones.exe) that support the wheel both
sides - on the inside taper at the back of the wheel and the outside taper
at the front which has solved the problem for the wire wheels, and I have a
hub waiting to be machined so I can mount my V8 wheel by the studs. However
it does need the agreement of the tyre place to use them. I have done some
tests at my tyre place and found that their standard cone when used on the
back of the wheel gives the same balance results as the machined cone even
though the standard cone has a different taper and so holds the wheel on the
edge of its taper instead of its flat, so potentially you only need the
outer cone. YMMV.
PaulH.
----- Original Message -----
> You think that's frustrating, try wire wheels.
>
> Most shops can't balance them at all -- they would wind up putting 20
> weights around the rim and they would still vibrate.
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