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Old 09-01-2012, 02:46 PM   #1
TopGearAddict
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Join Date: Oct 2011
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Unhappy Pirelli P-Zero Flat

So my rear passenger side Pirelli P-Zero is flat. I filled it up last night because the tire pressure light was on and this morning its completely flat. Now what I want to do is fill it up and drive it to a mechanic because it can retain air. Is that a bad idea? Or how long can i drive on a spare? Thanks
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Old 09-01-2012, 04:03 PM   #2
Red11rex
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Quote:
Originally Posted by TopGearAddict
So my rear passenger side Pirelli P-Zero is flat. I filled it up last night because the tire pressure light was on and this morning its completely flat. Now what I want to do is fill it up and drive it to a mechanic because it can retain air. Is that a bad idea? Or how long can i drive on a spare? Thanks
I spect the tire, If it's a crack or tear or even a bulge with a tiny leak I wouldn't drive on it. I'm not sure what the exact specs are but there is a limit of distance and speed you are supposed to stay under with a spare. I'm sure the Subaru manual will tell you everything you need to know about the spare..

You can fill the tire up and put water or even spit on questionable spots of the tire and it will make noise when you find the leak.
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Old 09-02-2012, 02:53 PM   #3
that1dude
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If you filled it last night and it was completely flat by morning, you have a pretty substantial leak. I wouldn't drive on it unless the tire shop is right up the street.
If there's just a puncture in tread it should be repairable. BUT, if you drove on it with very low or no air, the tire is probably ruined. If that's the case, get ready to buy all four...

If you have to use the spare, make sure its at 60psi. It will probably be low unless you check it regularly. Stay under 50mph and drive on it as little as possible.

Last edited by that1dude; 09-02-2012 at 02:59 PM.
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