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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Wheels and Tires > Low tire Question
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      11-12-2012, 11:40 AM   #1
sr5959
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Low tire Question

Hi guys, had a low tire warning yesterday, and when I checked the tire it was half normal pressure so I think I'll have to repair or replace. I have about 10k miles on the car so do I have to replace both rear tires? I have 17" Conti all-seasons. Thanks!
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      11-12-2012, 12:42 PM   #2
zeezz
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Do you check regularly? If not, it might have just gotten low enough to trigger a warning, if you fill it up and it deflates more then you have a problem. To my understanding tires will lose a normal amount of air over time though.
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      11-12-2012, 12:46 PM   #3
chrisny
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Warning comes on way before half and any normal loss should more or less apply to all tires and not be so drastic. Sudden temperature changes can have a big impact, but again, not just to one tire.. Not sure I would worry about replacing both tires to keep wear the same, but I guess that depends on how low the tread is on the one that is still good.
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      11-12-2012, 01:33 PM   #4
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Thanks guys, I filled it up and was able to drive to work with no further warnings, I think it's a slow leak although I can't see the cause. I will try to get it repaired.
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      11-14-2012, 10:56 PM   #5
JUSKIDN
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extreme weather temp changes can also make the pressure go up and down
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      11-14-2012, 11:07 PM   #6
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Most likely a puncture. Repair it. Just make sure the tire shop has a leverless tire changer. Or, you may end up with rim scrapes.
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