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Old 02-08-2015, 04:13 PM   #1
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Does it matter that I flipped the pickup's spare?

Is there a particular reason that the spare tire beneath the bed of a pickup is hung right-side up? With the valve stem on top, you cannot check the tire pressure without cranking the spare down.

So I flipped the spare on our Tacoma to put the valve stem on the bottom. I do not see why this might be a problem, but I am willing to be enlightened should anyone have good reason why this is a bad idea.
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Old 02-08-2015, 04:30 PM   #2
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Probably to protect the good side. If it matches the rest anyway.
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Old 02-08-2015, 04:37 PM   #3
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I always like to get at the valve as well. Just don't forget to crank it up and down once a year to keep things free moving.
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Old 02-08-2015, 06:22 PM   #4
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I turned mine over and put the valve stem at the front to prevent road debris from hitting it, I like to check the pressure on it occasionally.
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Old 02-08-2015, 07:47 PM   #5
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The Jayco manual says to install the spare tire with the valve UP. I would assume to keep dirt etc out of the valve, same with the TV tire. It could also be due to the shape of the rim, the valve being up may make a difference in how it seats on the holding device.
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Old 02-08-2015, 07:55 PM   #6
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It has not made any difference on my rig. I put a cap over the stem and positioned it so it is not in jeopardy. Much easier to check pressure.
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Old 02-08-2015, 09:41 PM   #7
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Right or wrong I mounted my TV spare tire so the pressure could be monitored. Due to adding a fifth wheel hitch mounted cargo rack - my FW spare tire has been relocated to the basement area.
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Old 02-08-2015, 10:13 PM   #8
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Page 49 of 2015 JayFlight manuel... may have to do with the seating of the rim against the bottom of the trailer.

"
Put
the steel hoist lift support located on the end of the cable through the rim
of the tire. The hoist lift support clips need to seat inside the center hole of the
tire rim. The valve stem of the tire MUST be pointed in the up position or
toward the bottom of the trailer
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Old 02-08-2015, 10:53 PM   #9
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Valve has to face upward to protect it. It isn't going to matter if it was properly inflated if the valve is facing downward and it get's sliced or damaged by road debris. A cap on the valve keeps dirt out but doesn't protect it from rocks or other sharp objects . . .

If your spare is in good shape (most likely new) it isn't going to lose more than 2-3 psi over the course of a summer camping season which will be more than enough to get you to the nearest filling station if you need to top up it up with air after putting it on.
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Old 02-08-2015, 11:21 PM   #10
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Quote:
Originally Posted by NC Roamer View Post
Is there a particular reason that the spare tire beneath the bed of a pickup is hung right-side up? With the valve stem on top, you cannot check the tire pressure without cranking the spare down.

So I flipped the spare on our Tacoma to put the valve stem on the bottom. I do not see why this might be a problem, but I am willing to be enlightened should anyone have good reason why this is a bad idea.
My Silverado 1500 had the spare hung with the valve stem on the bottom, pointing toward the ground, from the factory. This is my 3rd new Chevy truck (1980, 1982, 2012) and they have all been like that.
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