Posted by Verdi on August 04, 03 at 06:38:15:
In Reply to: Tire Valve Stems posted by Terry on August 01, 03 at 10:20:52:
I learned this the hard way. Had a standard stem blow in my driveway after new tires were installed.
The heavy duty stems I've seen are brass from top to bottom, sometimes coated in rubber. If you can bend your existing stems easily from side to side, they are probably not hi-pressure stems.