i've been running 17"x 8.5" Advan tc2's for about 3 years now and the other day i went to fill my tires up with air.. unfortunately, i could fill 3 out of 4 tires.....the last tire, no matter what i did, couldnt fill up ...the stem itself looks intact (no damage) when i press on the core the air comes out, but air wont go in! WTF?!...its at 25 psi right now and i dont want a flat on my hands anytime soon...please help ASAP!!!

extra info:
Rims:17"x 8.5" Advan tc2 gold
tires: Federal 235 45 r17
valve stem: (came with rims) anodized Advan blue metal (no leaks/damage)
changed tires twice, used same stems and core. this is the first time this happend...

what could be the problem? what should i do?

tia
-ROB

 

your suppose to replace the valve stem everytime the tires are switched (which a lot of tire shops don't do). my guess would be that the valve core was put in backwards. i suggest taking it to a tire shop and have them replace the valve stem.

they gotta pull the tire off the rim to install a new valve stem so don't be surprised if it costs a little more than you expect.

 

^^^ thanks for the reply...i realize that you should replace the valve stem with every tire change.... its just that the rims came with some nice anodized blue metal ones so i didnt want to change them....besides i dont think they installed it backwards b/c ive been filling up all the tires with air for the past 2 years with no problem...only recently that one side started to act up.....i'll try to change the valve core and see what happens. before i replace the valve stem with an ugly black one, lol.

-ROB

 

I don't care if they are 24kt gold. When you put on new tires replace the valve stems. Had a valve stem let loose at 145 mph on the track. Smacked the wall hard in a 911 production coupe. Worse $40 I ever saved (they were a cool red anodized!). The repairs only cost me $8K!

 

whoa! i believe its time to change out the valve stems! thanks for the replies guys

-ROB

 

you can sometimes just change out the core and not the whole stem.i worked in a tire shop and most higher end rim/tire shops should be able to install a stem (if ness.)w/out removing the tire,maybe only a rebalanced if tire is not put back to same spot.lmk what was the cause.

 

^^^ hes correct, the tire tech can just break the bead and push down on the tire and replace the valve stem with ease.

 

But if it only the core that's bad - why not just change it?

 

the rubber around the base of the valve stem (which mates to the inside of the rim), wears out with time and miles. and like what NW OBS said, they can blow out of the rim, but that is very rare.