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Ok so hereís a weird exhaust issue with my E450 wagon.

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Ok so hereís a weird exhaust issue with my E450 wagon.

 
Old 03-14-2019, 09:31 AM
  #26  
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On our CLS450 both tail pipe reflect black exhaust. Also, in many other cars when equipped with quad tail pipes, only two actually reflect the black exhaust. And in other vehicles like BMW's only one actually works. bottom line, the manufacturers installed them (dual and quad) for appearance.
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Old 03-14-2019, 09:39 AM
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Originally Posted by 2012 merc amg View Post
Could the Michelin primacy run flats be that much better than the good year run flats or maybe I have a bad tire or bent rim?
In a word, yes.

Mine is smooth is glass but I'm not only not running Goodyear RFT (mediocre), or Michelin RFT (better), but Pirelli regular tires. They have been good. However, I'll likely go for the Michelin Pilot Sport A/S 3 regular tires next time round; the reviews are just too compelling.

As to the wagon ride, I don't have the specs, but perhaps it's heavier than your cab. Also, it has the rear air suspension to level the trunk.
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Old 03-14-2019, 09:58 AM
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I have the Goodyear RFT on the CLS 450 and keep the air pressure at around 33-34lbs as recommend and i have no issues with the ride quality. When i received the car new from the dealer, the tires were set at 38!. This cause the ride to be a bit bumpy but i did not mind. You get perhaps better mileage. Just follow the Tire pressure guide in your gas cover cap and you should be ok.
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Old 03-14-2019, 10:01 AM
  #29  
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I think there has been something flukey on my wagon since day 1. The vibration from the rear makes kinda a pulsating sound as Iím driving along. Iíll have them force balance the rear wheels and check them for roundness. You never know one of the rear wheels might have been out of round from day 1. If that does not do it Iíll change the tires out. Maybe the same tires I have on the cabriolet as Iím more than happy with the ride in that car. They are Michelin Primacy 3 245 40 r19 inch. Canít find anything on them that says they are run flats but I assume they must be as no jack or inflator in the Cabriolet.
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Old 03-14-2019, 10:02 AM
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Originally Posted by nycebo View Post
In a word, yes.

Mine is smooth is glass but I'm not only not running Goodyear RFT (mediocre), or Michelin RFT (better), but Pirelli regular tires. They have been good. However, I'll likely go for the Michelin Pilot Sport A/S 3 regular tires next time round; the reviews are just too compelling.

As to the wagon ride, I don't have the specs, but perhaps it's heavier than your cab. Also, it has the rear air suspension to level the trunk.
I've had terrible experiences with Michelin Pilot Sport A/S 3 and 3+ regular tires - 245/45-VR18. I purchased 1 set and Michelin replaced them twice at no cost due to poor mileage. At 30,000 miles total on the 12 tires, I replaced them with Pirelli Cinturato P7 All Season regular tires that significantly outlasted the Michelin's.

Last edited by ua549; 03-14-2019 at 10:06 AM.
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Old 03-14-2019, 10:05 AM
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2012 merc amg I definitely recommend a wheel balance on all wheels before doing anything. Hopefully the problem is thus easily resolved.

ua549 thanks big time for the real world opinion. I hadn't considered longevity. Good to know.
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