The dreaded flat spots!
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Drifting
Joined: Nov 2016
Posts: 1,820
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From: Somewhere in the middle of Kansas
The dreaded flat spots!
I have had nothing but good to say about the Hankook Ventus tires on my Z06, but recently I started getting a vibration at road speeds so I thought a tire out of balance. I took it in and had them balanced and the tech is telling me I have flat spots and that one tire in road force test has a hard spot on it. UGGHH! Have any of you experienced this? This is not my daily driver but I usually stretch her legs almost every weekend. Do I have to store the dang thing on Jackstands when not using or what???
Team Owner
Joined: Jul 2006
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From: Douglas County WI
I took a 1 1/2" thick sheet of pink styrofoam and cut it into 2ft X 8 ft lengths and secured them to the garage floor with duct tape where the wheels are when the car is parked. After a while (weeks) the tires settled into the styrofoam and it supported the bottoms of the tires like those tire dollies that cost about $40 each. Of course the sheets don't have wheels so the car can't be moved around but they seem to serve the purpose to keep the tires from getting flat spots..
Last edited by glbeauchamp; Oct 3, 2018 at 03:30 PM.
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Obviously a problem could develop with any tire, but I have been running Hankooks for years and not had a hard spot develop. My car does sit for extended periods and has shown some flat spotting when I drive it again, but that usually works itself out after a few miles of driving.
Last edited by Vetteman Jack; Oct 3, 2018 at 05:06 PM.
Drifting
Joined: Jul 2017
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From: S.E. Pennsylvania
Obviously a problem could develop with any tire, but I have been running Hankooks for years and not had a hard spot develop. My car does sit for extended periods and has shown some flat spotting when I drive it again, but that usually works itself out after a few miles of driving.
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Drifting
Joined: Dec 2010
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From: West Seneca NY
I think it may also have something to do with the compound of the tire, Hankook & Nitto are foreign made tires, I also have Nitto NT420S on my truck & are noticeably stiffer when cold or if my truck sits for a few days.
Le Mans Master
Joined: Sep 2013
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From: Wisconsin
It is rare, but I have had flat spots on modern radials after 6 month storage. Over inflating them must help, since I haven't had a flat spot since I started doing it.
Last edited by JR-01; Oct 4, 2018 at 09:12 AM.
Racer
Joined: Jul 2011
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From: Ozark Alabama
I just drive mine everyday . 3rd set of rear Hankooks put on yesterday. I did find that if a run them at 30 psi it wears the centers out faster than the edges, I dropped them to 28 and they seem to wear more evenly.