Had some cold weather a few days ago, 0F and once I got on the road for a while (from a warm garage) my low tire pressure light came on. I knew it wasn't the four regular tires since I had just checked them about 2 days before. I went to check the spare tire and it was installed with the valve stem pointing up at the bed of the truck. I struggled with it for a while and managed to get a gauge on there and it was 26 PSI. Could not get the air hose on there so finally I lowered it and turned it around. I see no reason why I couldn't install it back the other way around. So now valve stem pointing down for easy access. I aired it to 35 PSI and my light went off the dash and all good.
hi, mine is also upside down, i think they come that way for some reason. but i can get to the stem without any issue's. i filled it to 45psi's this time.
it might be like that to protect the stem. if something jump's up from mthe road and of course it hit the stem, well now it's big buck's to fix it.
i heard they are expensive tire pressure sensor's, and to have it installed and inputed into the system. so i'll leave mine where it is.
gorilla
Turned mine upside down, too. TPMS( I think the PMS part is significant) system is a PITA! Very finicky and leaks if it does not like the air hose you use. Anyway, it's easier to check & replace lost air with the valve down. If it ever breaks, rubber valve stems go in.
I like that they at least put a tpms sensor in the spare. That way, if you need to use it, at least its not flat! I've had that before on a car, got a flat in the middle of the night, 20 miles from home. Change for the spare, and it was so low....grr....but at least it had more air the flat. So I drove slow in it until I found a gas station open at 3am and put more air in it.
__________________ 2006 Tundra Access Cab V8 - TRD
16x8 Konig Countersteer w/Nitto TerraGrapplers 285/75R16
Bilstein 5100 front/rear, Wheelers 1.5" rear blocks
Dynomax cat-back w/Cherry Bomb Pro muffler
Pioneer headunit w/Alphasonic amp and Sochse speakers
HID retrofit in the works, Acura TL bi-xenon projectors w/BMW ZKW lenses
Truxedo Truxport
Trail FX black steps bars
Yeah, one of the first things I did when I got my Tundra was to flip the tire. Also on the last three Toy trucks it was mounted that way. I'm sure the engineers have a reason to mount it with the stem up (like they can check the tire on the assembly line before they put the bed on the frame), but in the real world, it works with stem down.
I've toyed with an idea for the spare on my Tundra for years.
"Flip the spare over so you can get to the valve stem AND in doing so you have an additional storage space"
The larger storage space under the backseat of my '03 Access Cab has been filled with Logic Q sound box holding 2 eight-inch sub-woofers.
So My Idea: Take the jack, jack handle, lug wrench, plastic drop cloth, gloves, rags, etc. wrap them in plastic so they're waterproof and store them in the upturned spare tire! There is quite a bit of space in the "inner" side of the wheel than in the shiny side.
Now of course I might have to have the jack handle in it's original storage space because it's needed to lower the spare tire. AND in addition go down to Harbor Freight and get an inexpensive hydraulic bottle jack to put in the spare wheel storage space in place of the original. In case of a flat I would much rather be pumping on a hydraulic jack than a mechanical one.
I would then be able to put more stuff in the underseat storage.
WHAT do YOU think??
George60
__________________
LACK OF PLANNING ON YOUR PART ----------------
DOES NOT CONSTITUTE AN EMERGENCY ON MY PART !!
So My Idea: Take the jack, jack handle, lug wrench, plastic drop cloth, gloves, rags, etc. wrap them in plastic so they're waterproof and store them in the upturned spare tire! There is quite a bit of space in the "inner" side of the wheel than in the shiny side.
WHAT do YOU think??
George60
If you get a flat and pull off to the soft shoulder it could be a problem and Don't go wheeling anywhere that you need the jack to get your backend out of the mud! I have been stuck and helped people that have framed trucks and only with digging and jacking did we ever get it out! If your jack was under the rear, you will need to tunnel to get the jack out
He said he'd be getting a bottle jack in place of the scissor jack. I like the idea of using the spare tire for strage, if you can keep it from rattling. As far as low tire pressure surprises, I always carry a portable air pump behind the front seat(front seat is all the reg. cab. has)!