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Steve said,
Bill,
I haven't had my wheels balance on the car since 1956. This is not a =
good
method. The electronic off-car balancers are the only way to go. Make =
sure
they use new weights.
Now, as for that vibration, your rotors just are not large enough in =
diameter,
or mass, to cause anything more than a bad judder when you use them. =
You didn't
specify if this vibration changes with speed, has any particular =
frequency, gets
bad at, say 60 mph, and goes away at 75 ("But Officer, I HAVE to drive =
that fast
or it bounces all over the road").
This may be true for Tigers but out of balance drums or disks can be a =
problem on some cars. this seems to be common with aftermarket parts a =
lot. Of course us Tiger folk don't have that problem. Balancing on the =
car is about the only way to remedy the situation. Nothing says you =
can't first balance the wheels off the car first and then add or remove =
weight to the drum/disk to improve on car balance. =20
I've also had bent or out of round tires or rims that were "in balance" =
like Steve mentioned.
Sometimes shocks can be the culprit. Your suspension can be resonant =
with just the right road surface conditions to appear to have a =
vibration with a speed dependency like bad balance on a Tire. =20
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