06-07-2010, 12:57 AM
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#31 (permalink)
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Metro HotRodder
Join Date: Jun 2010
Location: Bellingham Washington
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Nitogen in the tires as in a Airplane, they also do that in Racecar tires ,it keeps the pressure the same even when the tires and inside air in them gets warmed up .
Im wondering about the "donut spare" the small spare tires that say Dont go over 45 on the side and they are good for 60 PSI , has anyone ever ran a set of 4 of these and seem how they handle and what kind of gas mileage improvment they provide? I have 5 or 6 15" donut spares I would like to try out but would like to hear some real life experiance with them Scott
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06-07-2010, 01:12 AM
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#32 (permalink)
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Master EcoModder
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They have about 2500 miles on them, installed a month and a half ago.
There's also 2 inward bubbles on my spare. Only ran 50 miles on it, and it's still at the original 35 PSI.
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06-07-2010, 09:22 AM
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#33 (permalink)
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Camry MPG Modder
Join Date: Feb 2010
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Curious what brand they were so we all can keep that in mind when hyper-inflating
Quote:
Originally Posted by AeroModder
They have about 2500 miles on them, installed a month and a half ago.
There's also 2 inward bubbles on my spare. Only ran 50 miles on it, and it's still at the original 35 PSI.
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Sorry to hear this happened on your new set of tires.
Well at 2500 miles I would hope you can get them replaced as defective.
Bought my Yokohama's from discount tire direct and right about now I am going to find and fill out that tire registration card I never sent in.
Also going to check my pressure a couple of hrs into my next long trip to confirm the warm/hot tire pressure.
Pete
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06-07-2010, 11:00 AM
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#34 (permalink)
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Pokémoderator
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AeroModder -
Quote:
Originally Posted by AeroModder
They have about 2500 miles on them, installed a month and a half ago.
There's also 2 inward bubbles on my spare. Only ran 50 miles on it, and it's still at the original 35 PSI.
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Can you post some pictures (does the black rubber make it hard to see)?
CarloSW2 |
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06-07-2010, 11:55 AM
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#35 (permalink)
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Master EcoModder
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They're very hard to see, and I really only found them by feel. I'll see what I can do, though.
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06-07-2010, 12:00 PM
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#36 (permalink)
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Master EcoModder
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Quote:
Originally Posted by VegasDude
Don't forget about Nitrogen. They use it in airplanes. That means you really need it.
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hahaaha I wonder what we're putting in our tires anyway...I typically fill with about 75% nitrogen, 19% oxygen, plus a little water vapor, argon, and some other trace gases - helps the tires warm up faster that way - they're a bit flatter for the first 1/2 mile, then the tires warm up and the vapor expands, fully inflating the tires! 
Don't get why anyone would pay for what we have about 80% of anyway. |
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06-07-2010, 12:03 PM
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#37 (permalink)
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Hypermiler
Join Date: Dec 2007
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If they're inward dents, it could be where the sidewall belts are joined and overlapped, and not a problem. All 8 tires on my 2 vehicles have these - two depressions that run from the rim out to the tread (like spokes), about 6 inches apart from each other.
Outward bulges are bad.
http://www.tirerack.com/tires/tirete....jsp?techid=32
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06-07-2010, 12:40 PM
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#39 (permalink)
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Pokémoderator
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PaleMelanesian -
Quote:
Originally Posted by PaleMelanesian
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I have the inward dents too. When I first saw this, I lowered the PSI, but they didn't go away, so I restored the PSI.
CarloSW2 |
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06-07-2010, 12:45 PM
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#40 (permalink)
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AeroModder -
Quote:
Originally Posted by AeroModder
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Ok, I have those too. I only noticed the inward ones, but I will look for the outward ones also. I think I have had them for the life of the tire, but I don't think I noticed them until maybe 10 or 20K miles. Because I already had so many miles on my tires, I (crossed my fingers and) didn't worry about them. I now have 60K miles on my tires. I will also post a picture when I get a chance.
I will also go looking at my wife's and other people's tires while I am at it.
CarloSW2
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