Tire monitor system question
Looking at getting the TST system and know they recommend metal valve stems but wondering how many have not changed to metal stems and any problems using the ones that came on there. It came with nit...
Forum Discussion
K.Reeve wrote:
ok, not a tire guy, so I want to know, do they mount the tire then apply a vacuum to purge all the air out of the tire without sucking the sidewalls off the rim, and then fill with nitrogen? or do they just mount the tire like any normal shop, then just fill with Nitrogen? if so why are we paying a premium price for this service? air is already 78-79% Nitrogen already, so really your Nitro filled tires are what %? at what cost? ill stick to old fashioned air thanks.
Ah, so there's at least one more guy thinking about it on this Forum.
Atmosphere is 14 psi when the tire is filled. the tire is then pressurized to 45 psi. One third of the pressure contains 80% nitrogen and 2/3 contain 100% Nitrogen = 93% nitrogen. It's not exactly like that because more volume of N is introduced to make up the difference in pressure but there is still some dilution.
I will believe nitrogen is better when someone can explain to me the value of putting a green cap onto the stem. ;)
I'm liking that stem cover idea, though. I thought I told the tire shop to use metal stems but that didn't happen. I bet I could buff up some aluminum tube to look pretty good.
