Dave et al -
I think it is terribly dangerous to inflate a tire without knowing what the rim will take. If the OEM tires take 50 psi, then I would not assume that the rim can take any more than that.
Most of us have occasionally seen news stories about some shade-tree mechanic who overinflates a tire to the point where it explodes. Quite often it kills him, since his face is near the tire when it explodes. I'm quite sure that if a rim explodes, it is just as likely to be fatal with all those metal hunks flying around.
As noted in an earlier (much earlier) post, the rim's pressure limits, along with load-bearing capacity and other info, is likely stamped into the interior of the rim. In other words, once the tire is mounted on the rim, you can't see the stamped info any more. You must check for the info while there is no tire on the rim.
Just my opinion. But count me out on this operation. It scares me way too much.
Bill
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