Switched to summer tires car feels floaty - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #1 of 8 (permalink) Old 03-30-2018, 06:27 AM Thread Starter
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Switched to summer tires car feels floaty

So I switched my summer wheels and tires with Hankook V12 summer tires to my winter wheels and tires in Nov 2017.

Yesterday I switched back to my Hankook summer tires. I confirmed the direction, torque and air pressure.

I drove the car and it felt quite squirrely. Almost floaty. Especially over rough roads I felt I was constantly making steering corrections to keep it straight. I took the car for wheel alignment and everything seemed within spec.

Could this be due to my summer tires? they were perfectly fine when I removed them last November.

What else could cause this drastic change ?
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post #2 of 8 (permalink) Old 03-30-2018, 10:39 AM
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I don't know tires. How bout the thought that maybe some brands of tires (that now have to be classified as in the used category) need a few heat an cool down cycles put on them, to bring them back to remembered normal stickiness (after sitting on the shelf for a long period). Then again, maybe this thought is meaningless.
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post #3 of 8 (permalink) Old 03-30-2018, 11:07 AM
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^^^^Tires do harden when sitting, couple a good trips should bring them back.
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post #4 of 8 (permalink) Old 03-30-2018, 01:14 PM
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Like BAS said, totally normal for the first few trips!

2009 SRM PONTIAC G8 GT
VCM OTR Cold Air Intake
Kooks Long Tube Headers / HF Cats
Solo Mach Shorty Catback
Continental Extreme Contact DWS6 Tires
Shadow Chrome Camaro SS Wheels
91 Octane Tune @ JLS Tuning Performance
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post #5 of 8 (permalink) Old 03-30-2018, 05:09 PM
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My wife's car (not a G8) behaves like that when there is too much air in the tires. Did your tire pressure gauge become inaccurate over the winter?

Gone but not forgotten: 2009 Pontiac G8 GT, White Hot, Premium, Sport. Tune is "Down Under" by Men At Work.
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post #6 of 8 (permalink) Old 03-30-2018, 09:42 PM Thread Starter
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I checked the pressure with two different gauges.
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post #7 of 8 (permalink) Old 03-31-2018, 03:48 AM
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Found this article pretty interesting https://www.tirebuyer.com/education/...or-longer-life

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post #8 of 8 (permalink) Old 04-02-2018, 05:49 PM
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What was the outcome? Did they settle down after a few heat cycles? What cold pressure are you running?
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