Bouncing ride 2004 E320 4 matic wagon - Mercedes-Benz Forum

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post #1 of 12 (permalink) Old 10-23-2013, 04:32 PM Thread Starter
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Bouncing ride 2004 E320 4 matic wagon

Hi
I have a E320 4matic wagon that when I drive out of the garage in the morning rides like the tires are out of round. It's like riding in continuous little pot holes, but ounce I've drove it for about 5 miles everything comes back to normal, a very smooth ride. Does anyone know what causes this problem?

Thanks
Papineau
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post #2 of 12 (permalink) Old 10-23-2013, 05:37 PM
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What brand and model of tire are you using?
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post #3 of 12 (permalink) Old 10-24-2013, 05:04 AM Thread Starter
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KUMHO ECTA LE SPORT, are my current tires, they are new only have 3k miles on them. Had Michelin tires before and they were doing the same thing.
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post #4 of 12 (permalink) Old 10-24-2013, 06:51 AM
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The Kuhmo construction of the tire may be prone to minor flat spotting even when parked just overnight. Kuhmo makes decent tires for the money. IF the car is smooth after a few minutes then the flat spots have gone away. I would contact Kuhmo if you do not want these tires. They have good customer service.
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post #5 of 12 (permalink) Old 10-25-2013, 04:59 AM Thread Starter
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Do you meen that my old Michelin tires had the same problem (flat spotting) has my new Khumo tires? That would be kind of weard, don't you think? Could the supension be responsible for this. I have coil springs in front and air supension in the back.
Thanks
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post #6 of 12 (permalink) Old 10-25-2013, 09:46 AM
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You are not saying what morning temperatures you have. It is common that cold, thicker oil in shock absorbers will give you firmer ride in cold weather, but you might recheck your self-leveling system as well.
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post #7 of 12 (permalink) Old 10-25-2013, 10:07 AM
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Quote:
Originally Posted by papineau View Post
Do you meen that my old Michelin tires had the same problem (flat spotting) has my new Khumo tires? That would be kind of weard, don't you think? Could the supension be responsible for this. I have coil springs in front and air supension in the back.
Thanks
The Michelins were not known to do that. I agree that the suspension should be checked out.
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post #8 of 12 (permalink) Old 10-25-2013, 02:44 PM Thread Starter
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The temperature is always the same in the garage. Wich is around 70 degrees all year round
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post #9 of 12 (permalink) Old 10-25-2013, 02:45 PM Thread Starter
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Quote:
Originally Posted by Kajtek1 View Post
You are not saying what morning temperatures you have. It is common that cold, thicker oil in shock absorbers will give you firmer ride in cold weather, but you might recheck your self-leveling system as well.
What is the self leveling system?
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post #10 of 12 (permalink) Old 10-26-2013, 12:02 AM
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The wagons do have hydraulic system, that levels rear suspension depend of the load..
It is pretty complicated (and expensive) system, that you might want to check with well qualified shop.
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