Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Mercedes-Benz Wheels & Tires

LinkBack Thread Tools Display Modes
Old 07-08-2002, 10:33 AM
Registered User
Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150
4 Cupped Tires???!!!!

I have 4 fairly new (5000 miles) Yokohama Avid V4. I went in to have the tires rotated and balanced and asked them to check the suspension because I was getting a lot of road noise and road feel throught the seat AND the steering wheel.

The technician noticed ALL four tires were cupped. Their on a 1998 E320T (wagon) with 66,000 miles. Best guess from the tech is that the tires were not suitable for the car. Essentially they said:
1. The car was too heavy for the tires and,
2. the tires are designed to be run at 35 psi.

They're doing the standup thing and upgrading me to Michelins for only the price difference. I have NO complaint with the services. My question is, has anyone heard of this????????


Reply With Quote
Old 07-09-2002, 11:28 AM
Posts: n/a
It's not the brand you need to be paying close attention to. You do need a good brand, but load capacity is a very important consideration.

Good luck,
Reply With Quote
Old 07-09-2002, 03:53 PM
Registered User
Join Date: Mar 2002
Location: Great White North!!!!
Posts: 400
i would have thought the tech would check the tire rating against mercedes ratings.i think he would have to give you new tires-at the least!
'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)
Reply With Quote
Old 07-09-2002, 06:30 PM
Posts: n/a
I expect that the load rating on these tires was within spec. That's not the point. Don't use the bare minimum, use something with greater load carrying capacity for longer tire life.

Have a great day,
Reply With Quote
Old 07-10-2002, 10:23 PM
Fimum Fit
Posts: n/a
Cupping generally results from a standing wave effect in the tire tread

This can happen if a tire is badly unbalanced (or not properly dynamically balanced), or from a combination of a slight unbalance and bad shocks, or from an extreme misalignment. In rare cases, there may also be a mismatch of a particular tire design (usually only at a narrow pressure range) and the designed harmonics of the car's suspension. All of the above should result in vibrations easily perceptible to the driver long before the cupping is visible, and I can not imagine how any of them could happen to all four tires at once -- two at one end, perhaps, in rare cases, but not all four -- usually only one at a time. This is a real puzzle, unless the tires were a defective batch, like those notorious Firestones on Ford SUVs; I suppose that if someone with a pre-ABS car locked up all four brakes in a long skid and flat-spotted all four tires, and then didn't have them skimmed and rebalanced right away, it might cause all four to be cupped eventually.

Last edited by Fimum Fit; 07-11-2002 at 07:40 AM.
Reply With Quote
Old 07-13-2002, 09:03 AM
Registered User
Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150
Thanks Fimum Fit,

That's the best opinion yet. That's be the one thing nagging me. Why or how ALL Four Tires? The car was balanced and aligned when the new tires were put on; it was smooth as a bell at 95 mph with no pull (I know that is only a one aspect of alignment!).

The ABS will "chirp" the rear tires in a panic stop. My "attentive driving" wife re-evaluates this from time to time. Dealer says the system is operating normally. But that only addresses the rears getting a flat spot.

Dealer says the suspension is tight; I've always felt the rear was a little too tight. If you've driven a corvette a little too fast over railroad tracks you know what I mean. It's hard/harsh on potholes; the interior sound like it's falling apart on a pothole. Again, dealer says it OK.

So, I'll switch to the Michelins and start from scratch.


Reply With Quote
Old 07-22-2002, 08:45 AM
Registered User
Join Date: Jul 2002
Posts: 44
Yokohamas are noisy and prone to cupping, not to mention poor tire wear.
Reply With Quote
Old 08-02-2002, 02:46 AM
Registered User
Join Date: Jan 2001
Location: oregon
Posts: 2,013
The Yokohams on my SE are way quieter than the Michilens on my SD they also got excellent reviews
from a host of reviewers........

William Rogers....

Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 10:32 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page