I just mounted 2 tourances yesterday. The front took 1 1/4 and the rear was 1/2 oz.
Funny thing is in the front the valve stem was still the lightest spot. The real was about 9 o'clock from the dots.
They seem to be pretty well balanced from the factory.
"Build a man a fire and he will be warm for the night, set a man on fire and he will be warm for the rest of his life."