Thanks for all of the information. Let me comment on what I have and have
not done so far.
Each time a tire goes flat and the shop or I worked on it I checked were the
problem was. It was never on the inner side of the tube where the spokes
are. Both rows of spokes are taped and I have had the spokes checked. I
have also used talcum powder on the tubes and had the tire shop do likewise.
They thought I was crazy but did it anyway.
Things I did not consider are that my Dunlop SP20 tires are ribbed inside.
I was told by someone else that I should not use tubes in tires with ribs as
well. I also never considered the question of tags or stickers on the inner
tube.
This brings up another question, since my car has not been de-cambered,
should I be running bias belted tires?
Steve Bauserman
67 4/4 Series 5 Competition
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