Is there any difference in rim strength if the rim is built into a
complete wheel, or if the rim is used alone?
~
Yes, significantly but strength is hardly a critical factor
for checking a tire's integrity.
--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971
Won't make any difference if you do not perform a roll test but you
may wish to consider how to handle the rim and tyre for mounting and
demounting. I find the spokes generaally useful in aiding the fitting
and removal of a tyre if the wheel is not attatched to a frame.