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Yellow warning passenger front tire?

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Old Apr 15, 2023 | 06:39 PM
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Yellow warning passenger front tire?

After some hard/ fun driving yesterday in 85 degree weather the Yellow warning temperature light appeared for the front passenger tire. It displayed 160 degree. The other tires were displaying Front driver side 138 degrees, Rear driver side 126 degree and Rear passenger side 127 degree.
Soon afterwards the front passenger dropped to below 160 degrees and the Yellow temperature warning light disappeared. I believe there is also a Red warning light that goes beyond the initial Yellow warning light?


Tires are almost new and just had the alignment done during the B service.
Is there anything to be concerned about? See photo below. Thanks.
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Old Apr 15, 2023 | 09:13 PM
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Normal. The front right tire is always hotter than the others. Yes it goes red past 160F. I've had mine red many times. Both front tires at times. No biggie. Summer performance tires don't even have 100% grip until they reach about 190F. The warning is quite conservative.






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Old Apr 16, 2023 | 02:46 AM
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Originally Posted by superswiss
Normal. The front right tire is always hotter than the others. Yes it goes red past 160F. I've had mine red many times. Both front tires at times. No biggie. Summer performance tires don't even have 100% grip until they reach about 190F. The warning is quite conservative.

Thanks. I though so but want to be sure. I knew front passenger runs hotter and it looks like the warning light comes on at 160 degrees.
Last year, July 19, 2022 MB supplied me a Tire Health Report(photo below) that indicated the front tires were marginal. I checked with an Indy tire company who stated they were fine and should be good till next year.

On July 29, 2022 I attended a professional golf tournament and the parking lot was a 2-3 mile long never ending horrific Cobblestone road. The C63s coupe rocked back and forth at 5 miles an hour. I neglected to have the Alignment checked afterwards.

In August/September 2023 I got a major blowout on the drivers front tire. Had it towed to the Dealership. The Tire and Wheel policy would not cover it as the Insurance policy supervisor stated by the photo condition of the blow out the required proper maintenance was not maintained. Probable the Cobblestone experience. I accepted his phone explaination and just paid for a new front tire.
So now super careful with tires and Alignment. Luckily the blowout occured at a time and place


in a safe location.



Last edited by jj18; Apr 16, 2023 at 02:49 AM.
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Old Apr 18, 2023 | 06:01 PM
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Originally Posted by jj18
Thanks. I though so but want to be sure. I knew front passenger runs hotter and it looks like the warning light comes on at 160 degrees.
Last year, July 19, 2022 MB supplied me a Tire Health Report(photo below) that indicated the front tires were marginal. I checked with an Indy tire company who stated they were fine and should be good till next year.

On July 29, 2022 I attended a professional golf tournament and the parking lot was a 2-3 mile long never ending horrific Cobblestone road. The C63s coupe rocked back and forth at 5 miles an hour. I neglected to have the Alignment checked afterwards.

In August/September 2023 I got a major blowout on the drivers front tire. Had it towed to the Dealership. The Tire and Wheel policy would not cover it as the Insurance policy supervisor stated by the photo condition of the blow out the required proper maintenance was not maintained. Probable the Cobblestone experience. I accepted his phone explaination and just paid for a new front tire.
So now super careful with tires and Alignment. Luckily the blowout occured at a time and place


in a safe location.
I gotta ask what was their definition of not properly maintaining the tire? And do not say it was because you drove on a cobblestone road.
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Old Apr 18, 2023 | 08:00 PM
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Originally Posted by ///Bruce
I gotta ask what was their definition of not properly maintaining the tire? And do not say it was because you drove on a cobblestone road.
What I can recall was the Tire/Wheel Claims supervisor stated this blowout was not from a pothole or a road hazard. He listed the conditions in my Policy where the tire(s) are not covered. I believe some time after the blowout and the new tire was installed I wondered back in time if I had caused some damaged to that tire driving over the Cobblestone road. Who knows?

I never mentioned the Cobblestone road to the Claims Supervisor as I had not made the connect at the time of our conversation.

Perhaps the July 19, 2022 the MB Dealership Tire Health Report (photo above) revealed the front tires as Marginal and I relied on the word of an Indy Tire shop that they were ok.

The MB Tire/Wheel Policy have been decent to me. I have had a number of tires both Summer and Winter simply replaced over the 4 year Policy with either by finding a nail or a slow leak or just cosmetic damage(curb rash) without any questions. And once they could not cosmetically fix the the chrome rim piece around the rear wheel to my liking so the SM was able to get a new rear wheel installed.

Last edited by jj18; Apr 18, 2023 at 08:17 PM.
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