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Dunlop d408 front tire Problem..

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Old Aug 14, 2022 | 11:36 AM
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Default Dunlop d408 front tire Problem..

My Scooter 2016 Ultra Limited
Dunlop D408 front tire


Front tire cracked/split all the way across. Yep this is the edited line..

Manufacturer date code (2321).
Give or take 1 year old from manufacturing date.
​​​​​Installed March 2022.
Probably less than 5000mil on it.
I always keep good tire pressure never over Loaded looked over befor every ride.
Question do you think this crack/split is inpack damage?
Thanks for your time.
 

Last edited by thedmfco; Aug 14, 2022 at 11:39 AM.
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Old Aug 14, 2022 | 11:53 AM
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Manufacturing defect. That looks typical of that model of Dunlop.
 
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Old Aug 14, 2022 | 01:05 PM
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Originally Posted by QC
Manufacturing defect. That looks typical of that model of Dunlop.
They don't call them Dungflops for nut'n.
 
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Old Aug 14, 2022 | 01:13 PM
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That does not instill confidence. I believe that is the same tire my son had replaced under warranty on his 2011 Road Glide. Still having problems 10 years later.
 
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Old Aug 14, 2022 | 02:43 PM
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This was the rear tire on my RGU after riding it home from Chicago last fall. No, I did not run over anything.

 
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Old Aug 14, 2022 | 08:06 PM
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After the third rear Dunlop tire split badly at 4000kms, I’d had enough. All I got from Dunlop was that I was overloading the tire or running under inflated. After sending the temp/heat graphs from my Tpms, I never heard from them again. I’ll never put another Dunlop on my bike.
 
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Old Aug 14, 2022 | 08:56 PM
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Looks like manufacturing defect. My stock front (date code 4120) and real tires (date code 4220) have 13,540 miles so far, still good.
 
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Old Aug 14, 2022 | 09:30 PM
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I’ve had a defective tire from another tire company and it was made good with a replacement no questions
 
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Old Aug 14, 2022 | 10:25 PM
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FDDK, sorry you've had such a bad experience with Dunlop. I have an '08 FLHT, and Dunlop is usually all I run. Although I run the American Elites My bike is now at 145,000 miles, and has went through a bunch of AEs without a single problem. Came with 402s. Wasn't impressed at all. Hence the AEs.
 
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Old Jan 19, 2025 | 11:55 AM
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I discovered this morning, as I was getting ready to head out for a ride, that I have this same crack across the tread on the rear tire of my FLHTK. This tire replaced the last one that did the same defect. Dealership contacted Dunlop last time and they covered some of the cost of a new tire, so we'll see if they do it again. I've never had an issue with the front and I always ride single. Is there a better option out there?
 
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