hi all.. had rear tire put on 500 miles ago, replaced valve stem with tire (bmw shop installed , bmw valve stem)
after checking tire pressure the past 2 weekends the valve would not pop back out, and air came out.. after i inflated air, the valve came back out and everything seemed ok , just seems to be a little sticky .. i would like to change the core, i know its a very simple procedure.. should I use just any valve stem core from a local tire shop, or should i order from bmw?

also.. i haven't pulled the core out, once i pull it out could i put some lubricate on, and see if that does the trick.. i realize the valve core is a very inexpensive part, i have no problem with purchasing.. thanks again, Rich

the bike is a 1999 R1100 RT.. running michelin PR3