Calling All 20" Dunlop Tire Owners.......!!!
The Dunlop GrandTrek Touring A/S
Tread Wear 200 A-A Tread Life 15-20,000 Miles
Pirelli Scorpion Zero Asimmetrico

Wear Rating 420 A-A / Tread Life 35 - 40,000 miles
By now you must have heard or read that your Dunlop tires will only last about half the life expectancy of the 20” Pirelli tires found on other GLK’s. (Please see: https://mbworld.org/forums/glk-class/320346-pirelli-vs-dunlop-vs-color.html)
In fact, it was confirmed that our 235/45/R20 Dunlop GrandTrek Touring A/S with a wear rating of 200 A-A has the WORST tread wear rating of ANY tire made today, including Super High Performance Summer tires. YES IT’S TRUE! There are racing tires with better ratings! No Lie!
This horrible rating translates into a tread life expectancy of around 15 to 20,000 miles if properly inflated and rotated. (Considerably less if not properly cared for.) These estimates were confirmed yesterday by Dunlop/Goodyear (same company) technical reps. as well as my own tire rep. They were all blown-away when they saw the numbers.
For comparison sake, the 20” Pirelli Scorpion Zero Asimmetrico is considered a high performance tire and not a “touring” tire like the Dunlop is. Traditionally this would mean that the tread life of the Pirelli should be considerably less, not the Dunlop. The Pirelli has a tread life rating of 420 A-A with a tread expectancy of 35-40,000 miles according to my same sources. (Pirelli Tech.-Line and my rep)
Therefore, I would like to know if there are any 20” Dunlop owners who wish to file a joint complaint with MB asking them to either exchange or compensate us for these obviously inferior tires.
It would be simple. We would just need to pick a day in the next few weeks to jointly call MB Customer Service with the same concern, mentioning our mutual dissatisfaction with the latest facts about the tires on our 2010 GLK’s. Maybe if enough of us complain, they’ll realize how dumb it was for them to think we wouldn’t find out.
I’m open for discussion……. So please fire away.
It will be tough for me to get any pull with MB. I called them the other day and let them have it regarding the ridiculous price for the cargo cover. They caved and gave one to me for FREE. So tires will probably be much tougher.
I was at the dealer the other day for relacement Wheel Nuts. They wanted to give me a "Special" for $50. they would fill the tires with Nitrogen. They claimed the tires would get better life. Is this true? Or is it a load of BS as well?
I was at the dealer the other day for relacement Wheel Nuts. They wanted to give me a "Special" for $50. they would fill the tires with Nitrogen. They claimed the tires would get better life. Is this true? Or is it a load of BS as well?
However all things being equal, it's mostly the compound the tire is made of, along with proper care that will dictate how long they'll last.
We need to try to get more to join our quest! Any ideas?
However all things being equal, it's mostly the compound the tire is made of, along with proper care that will dictate how long they'll last.
We need to try to get more to join our quest! Any ideas?
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It may be worth all Dunlop owners going down to your local dealer and having a similar conversation. Worst that can happen is they say No. At least they'll know it's a real concern for GLK owners.
It may be worth all Dunlop owners going down to your local dealer and having a similar conversation. Worst that can happen is they say No. At least they'll know it's a real concern for GLK owners.
It may be worth all Dunlop owners going down to your local dealer and having a similar conversation. Worst that can happen is they say No. At least they'll know it's a real concern for GLK owners.
).
We just special ordered a 2011 GLK350 4-MATIC for my wife with nearly all the options including the AMG appearance package. I told the salesman to request Pirelli tires with the build and he said they have no way to specify. And while he said they will gladly swap wheels and tires off another car on the lot, I'd rather not have to deal with this especially since ours won't arrive until March and they may not have any AMG wheel equipped GLKs on the lot then.
Oddly enough there seems to be no rhyme or reason to this issue. There is a mix of 2010s AND 2011s on the lot with AMG or standard appearance packages and Dunlop or Pirelli tires. The only thing I believe it could be related to now is 2WD versus 4-MATIC...I'll stop by the lot to check it out and see if that is a common factor. In the meantime, does anyone here have Pirellis on a 4-MATIC and if so what year and/or build date is yours?
Thanks!
Jason
Last edited by CJM Online; Nov 26, 2010 at 01:28 PM.

The irony is Pirelli is the only tire brand I have had problems with in the past (including Dunlops!).
I'm glad these are so highly regarded.



