Hankook Tire Wear - Kia Forum

 
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post #1 of 7 (permalink) Old 05-21-2019, 06:36 PM Thread Starter
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Hankook Tire Wear

I rotated my tires today, they look good for 42,000 miles, about 3/32" to go to hit the wear bars.
I am going to start using a little lower air pressure, maybe 32 psi instead of 35 psi.
The centers of my tires have worn more than the edges.
My experience with tires has been that the edges wear more than the center of tires, probably due to cornering lean pressure.
We do a lot of highway driving, especially the cross country trips we've taken twice with speeds typically around 75-80.
I think the centrifugal force on the tires at 80 mph throws the centers out causing more wear.


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post #2 of 7 (permalink) Old 05-21-2019, 07:41 PM
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Originally Posted by ST Ken View Post
I rotated my tires today, they look good for 42,000 miles, about 3/32" to go to hit the wear bars.
I am going to start using a little lower air pressure, maybe 32 psi instead of 35 psi.
The centers of my tires have worn more than the edges.
My experience with tires has been that the edges wear more than the center of tires, probably due to cornering lean pressure.
We do a lot of highway driving, especially the cross country trips we've taken twice with speeds typically around 75-80.
I think the centrifugal force on the tires at 80 mph throws the centers out causing more wear.
My wife's V6 Mustang got 55K miles, just onto the wear bars, on the original Hankook tires and they were worn perfectly even across the width.

If yours are wearing in the centre as you describe, it does point to high pressure for your typical driving.

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post #3 of 7 (permalink) Old 05-22-2019, 07:55 AM
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i've got 56k KM (35k miles) so far and I haven't measured them, but they still look fine, probably half done or so. ron's estimate for life fits with what I'm seeing
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post #4 of 7 (permalink) Old 05-22-2019, 11:54 AM
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I think the centrifugal force on the tires at 80 mph throws the centers out causing more wear.

I believe you have to be going wayyyyy.... faster than that.
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post #5 of 7 (permalink) Old 05-23-2019, 01:01 PM
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Originally Posted by koreanwheels View Post
I think the centrifugal force on the tires at 80 mph throws the centers out causing more wear.

I believe you have to be going wayyyyy.... faster than that.
Underinflated tires will do that. It doesn't have to be a big displacement. After many thousands of miles they will thin. The thinner they get, the more they will displace.
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post #6 of 7 (permalink) Old 05-24-2019, 10:53 AM
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Center wear is always over-inflation. However, your tire mileage appears to be very good to me. I only have 25,000 on my Hankooks but they still look great. I expect I will still have them in 2021 when I finish paying for the car. At least it will be sometime in that area. That's when I will be making the decision on whether or not to keep it. If I keep it I will definitely be getting tires, probably Hankooks again.

I think your deflation plan is not good. The recommendation from the maker is 35 PSI cold. MAYBE you can drop 1 PSI if the center wear bothers you but I wouldn't go any lower.

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post #7 of 7 (permalink) Old 05-24-2019, 02:35 PM
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you could also be judging the depth incorrectly. The edges of tires are a gentle curve, not a right angle, so the tread at the edge will appear deeper, even when wearing correctly.
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