Going Flat
02-08-2016, 03:14 PM
#1
Safety Car
Thread Starter
Going Flat
I have a tire pressure issue. My 67 has factory bolt-on wheels with 205/75/15 Diamondback tires. Come wintertime (in Michigan), when stored in "The Bag", one tire (and only one) goes flat. Yet come spring, this same tire holds whatever air I pump into it - and holds it well for the rest of the year. Any ideas as to what causes the tire to go flat when in storage? When stored in the bag, it is in an unheated but attached 2-car garage. Is it the cold causing the rim to shrink more than the tire? Thoughts?
02-08-2016, 03:18 PM
#2
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Probably a bead leak due to corrosion of the rim. You could dismount the tire, and clean up the rim with a brillo pad or scotch brite pad along the inner bead area and try again.
02-08-2016, 03:53 PM
#3
Race Director
I have a tire pressure issue. My 67 has factory bolt-on wheels with 205/75/15 Diamondback tires. Come wintertime (in Michigan), when stored in "The Bag", one tire (and only one) goes flat. Yet come spring, this same tire holds whatever air I pump into it - and holds it well for the rest of the year. Any ideas as to what causes the tire to go flat when in storage? When stored in the bag, it is in an unheated but attached 2-car garage. Is it the cold causing the rim to shrink more than the tire? Thoughts?
Sell the wheels to me and buy a good repo set.
Rick
02-08-2016, 05:32 PM
#4
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2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
Yup. If not that its the valve stem. I chased that last fall on my original KH's on my 65.
Dan
02-08-2016, 07:28 PM
#5
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St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23-'24
This was my experience too, for years. I did also do the clean up of the rim approach w/a brillo pad. Didn't help. So, finally, I gave up, and bought a new set of tires (the old ones needed changed after so many years anyway). That "fixed" the problem.
02-08-2016, 08:50 PM
#6
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02-09-2016, 06:44 AM
#8
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Instead of guessing where the leak is, why not submerge the wheel/tire in a tub of water like a tire shop does and look for bubbles? Like John said, bead sealer is a quick and dirty fix sometimes for a bead leak.
If there is a leak through porous aluminum, there's a sealer for that too but I've not used it.
If there is a leak through porous aluminum, there's a sealer for that too but I've not used it.
Last edited by MikeM; 02-09-2016 at 06:45 AM.