Service manager at my local dealer said these are not a good idea on a high performance bike. Seems like at high speed physics take over and can actually cause the stems to fail due to centrifugal motion cuasing the stem to seperate or tear where they enter the tire. The way he explained it, made sense at the time. He said there have been many write-ups about this in tech. manuals the past. YMMV.
I would have to call BS on your service manager...best lies/fibs/stories are the ones that have a little truth in them.
I can't say that I would believe it unless I saw and reviewed atleast one of the
many writeups.
He could have been bored that day and wanted to sound like a "technical expert" to somebody
+1
Stems to fail? They are solid aluminum. I guess those pesky wheels could fail too due to the centrifugal
forces. Of course a meteor could fall from the sky and hit you while riding your beloved FJR too. It's DANGEROUS out there! Once of the reasons we put these on is because they are
less likely to fail then standard rubber stems. Was he talking about those? Anywho, like Jeff said, if its good enough for a race team, it's good enough for me.
Has anyone had a problem with the nut backing off in the tire? That would be a major setback on a ride.
I think about these every time I check my tire pressure and lose air in the process. (Pressure would have been OK if I hadn't check it :angry: )
It's not me that wants to know, I'm asking for the new Avon Storms sitting out in my garage.
No, they don't back off, just as most of the bolts/nuts on your FJR don't either. They come with a threadlocker installed on the threads. C'mon folks, this isn't rocket science. Just a simple solid valve stem.