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new tires....flat spots now?

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Old 09-21-2010, 03:05 PM
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Default new tires....flat spots now?
I can't quite figure it out, but it seems my new hankooks develop flat spots overnight. It goes away after 3-5 minutes driving, but seems odd to me. I've never noticed this with any other tire before...could it be due to soft compound?
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Old 09-21-2010, 03:38 PM
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STL94LT1
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My Kuhmos do the same if the car sits for a few days.
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Old 09-21-2010, 03:42 PM
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Paul Wood
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Is anyone else old enough to remember NYLON tires? Overnite they would develop flat spots that would make you think the tires were square not round!!
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Old 09-21-2010, 04:34 PM
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Originally Posted by $$$frumnuttin'
I can't quite figure it out, but it seems my new hankooks develop flat spots overnight. It goes away after 3-5 minutes driving, but seems odd to me. I've never noticed this with any other tire before...could it be due to soft compound?
...glad you mentioned this...I was about to buy some Hankooks in the near future
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Old 09-21-2010, 04:36 PM
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Originally Posted by Paul Wood
Is anyone else old enough to remember NYLON tires? Overnite they would develop flat spots that would make you think the tires were square not round!!
...I do...I do...and until you drove a few miles...thump...thump...thump...........
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Old 09-21-2010, 05:28 PM
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kilowatt
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Default Hankook Tires
If you think that's bad, wait until Winter.
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Old 09-21-2010, 07:20 PM
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rich goepfrich
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Originally Posted by Paul Wood
Is anyone else old enough to remember NYLON tires? Overnite they would develop flat spots that would make you think the tires were square not round!!
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Old 09-21-2010, 07:22 PM
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Originally Posted by kilowatt
If you think that's bad, wait until Winter.
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Old 09-21-2010, 07:29 PM
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Originally Posted by $$$frumnuttin'
I can't quite figure it out, but it seems my new hankooks develop flat spots overnight. It goes away after 3-5 minutes driving, but seems odd to me. I've never noticed this with any other tire before...could it be due to soft compound?
bummer, I just bought these things for the rear too..

No issues yet. Fingers crossed
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Old 09-21-2010, 08:19 PM
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Originally Posted by 00Corvette
bummer, I just bought these things for the rear too..

No issues yet. Fingers crossed
well, it certainly is a minor issue....I just drove them hard tonight and I love them on the E-way...so quiet I now hear things in my cds I never noticed before...I just think it is a soft compound compared to the Michelins....that means they won't last as long though.
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Old 09-21-2010, 08:24 PM
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Originally Posted by STL94LT1
My Kuhmos do the same if the car sits for a few days.
I've got these on 3 cars, 2 which get driven no more than once a week and never noticed that.
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Old 09-21-2010, 10:29 PM
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I too am running these on my Z06, Dodge Charger (DD)... quiet as a church mouse...
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Old 09-21-2010, 11:45 PM
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I didn't think radials would do that.
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Old 09-21-2010, 11:52 PM
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Originally Posted by jrose7004
I didn't think radials would do that.
any tire will if it sits long enough...one day/week is ridiculous though. 6 months maybe
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Old 09-22-2010, 03:38 PM
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Prolly not the tire itself, rather the air pressure. Most shops never put a tire to the car recommended air pressure and therefore can be over/ or more likely undercharged with air. This can in turn create the flat spot feel till the car is rolling for a few miles.
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Old 09-22-2010, 05:04 PM
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Originally Posted by Venomous
Prolly not the tire itself, rather the air pressure. Most shops never put a tire to the car recommended air pressure and therefore can be over/ or more likely undercharged with air. This can in turn create the flat spot feel till the car is rolling for a few miles.
I bet you have hit it there. I know 3 tires are 2 pounds under...I'll fix that and let you guys know.
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Old 09-22-2010, 05:14 PM
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Originally Posted by Paul Wood
Is anyone else old enough to remember NYLON tires? Overnite they would develop flat spots that would make you think the tires were square not round!!
Just what I was thinking - guess we need to reply to the "old farts" thread.
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Old 09-22-2010, 07:44 PM
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guido7834
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Originally Posted by STL94LT1
My Kuhmos do the same if the car sits for a few days.
I've got Kumho's and never noticed it either.
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Old 09-24-2010, 10:03 AM
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STL94LT1
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Originally Posted by guido7834
I've got Kumho's and never noticed it either.
Are they the Kumho MX's?
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Old 09-27-2010, 02:00 PM
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Camjamsdad
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Kumhos SPT's flat spotted in about a week. You get used to it.
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