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Run Flat Tires vs. Non Run Flats

Old Mar 2, 2020 | 12:11 PM
  #1  
BenzRocker6's Avatar
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Benz C300 4matic Sedan
Smile Run Flat Tires vs. Non Run Flats

Greetings All!

First thread AND my 1st Benz. After a month on a '17 C300 it is ever so clear that run flats are a horribly stiff ride-now bumps do seem harder than they even look after "crashing over" them with these Conti-tech RUN FLATS! So, after almost unanimous agreement that they will change my ride to an impressive level that a Benz sedan which I bought a month ago with "babyish" 20,000 miles on it should be, here's a question:

**Yes, I did check for possible alignment and suspension issues with a Benz road techie. No problems detected.

Will the exchanging of these run flats to NON-ones make a huge difference? Of course I am excited almost more than when I purchased this car to find out. My guess is they will to some degree. The construction of run flats are made tough with little give and rough flexibility on the road.
I live on Long Island but winters are very rare with snow lately, and doubtful it will change in the near future (but that's another topic.)
*** Smooth ride and good handling along with wet traction excellence are my priorities-lots of rain here.**
So I am considering Pirelli Zero Nero GT Max Summer Performance tires. Maybe I'll go with an All Season instead.

For my C300 225 17 50 94 tires any A/S suggestions? Who has switched form a non-flat to a conventional tire? Your thoughts??
Thanks all!!

Last edited by BenzRocker6; Mar 2, 2020 at 12:13 PM.
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Old Mar 2, 2020 | 02:56 PM
  #2  
GringoBling's Avatar
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C400
I have the Pirelli Cinterato P7's on my C400 and I didn't even realize they were run flats until a year later.
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Old Mar 2, 2020 | 04:32 PM
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BenzRocker6's Avatar
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My concern will be if I exchange my run flats for non run flats and there is no noticeable difference. Then I'll know it's a C300 thing for at least the 17s.
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Old Mar 2, 2020 | 07:05 PM
  #4  
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C400
Originally Posted by BenzRocker6
My concern will be if I exchange my run flats for non run flats and there is no noticeable difference. Then I'll know it's a C300 thing for at least the 17s.
normal tires are much quieter
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Old Mar 2, 2020 | 09:23 PM
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1992 MB 190E, 2016 MB C300
For what it's worth. I have Conti run flats on my 2016 C300(17" rims). Compared to other tires that I have owned, the Conti run flats are quiet and smooth riding. Some tire noise on some road surfaces, but not bad IMO. But yes, I hate the whole run flat idea an would much rather have a spare and considering Michelins.

Last edited by dennish; Mar 3, 2020 at 01:13 PM.
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Old Mar 3, 2020 | 09:27 AM
  #6  
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2019 C300 4Matic
You'll need to buy a jack, lug wrench and spare tire as well. I run Blizzaks snow tires in the winter and discovered that due to my run flats, I had no jack, wrench or spare tire. I purchased a cheap jack and wrench and just keep one of my run flats in the trunk for an emergency. Had no idea about run flats not including the tire change items....my bad for not discovering this when purchasing.
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Old Mar 3, 2020 | 11:06 AM
  #7  
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Originally Posted by Eric Schott
You'll need to buy a jack, lug wrench and spare tire as well. I run Blizzaks snow tires in the winter and discovered that due to my run flats, I had no jack, wrench or spare tire. I purchased a cheap jack and wrench and just keep one of my run flats in the trunk for an emergency. Had no idea about run flats not including the tire change items....my bad for not discovering this when purchasing.
fix a flat cans work really well too.
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Old Mar 3, 2020 | 11:24 AM
  #8  
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2016 C300 Sport Polar White
Originally Posted by BenzRocker6
My concern will be if I exchange my run flats for non run flats and there is no noticeable difference. Then I'll know it's a C300 thing for at least the 17s.
I have a 2016 C300 sport with 19in wheels. After a year on the run flats I couldn't stand the horrible ride anymore. I switched out to Continental ExtremeContact DWS 06 All Season tires (Tire Rack) about 4 months ago and LOVE them. Immediately noticed the smoother ride. NO REGRETS! Also the Continental run flats that MB uses wear out extremely fast. If you switch think about getting a jack and a spare or donut. (check other threads for ideas) I haven't yet but eventually will.
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Old Mar 3, 2020 | 12:59 PM
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I will second the response on the DWS06 tires. I've got a set of DWS06 for my 2004 525i and 06 320CDI, and will buy them again any chance I get. They are very smooth with great tread life.

The Run-flats Conti Procontact GX SSR 18" are new in the back and old in the front on my 2016 C350e, which has airmatic. I will admit the ride is rougher than I am used to especially considering that the airmatic suspension softens the ride, but its acceptable. I would've preferred to have 17" rims, as I believe every inch increase the harshness of the ride considerably. From the three cars I have 16" is softest, 17 is reasonable, 18 is acceptable.

Once these tires wear out or the ride gets to be too rough (I suspect the latter), I will replace them with the Conti DWS tires and get a flat repair kit...and keep my membership with AAA, as towing hybrids is not allowed...they need a flatbed.


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Old Mar 3, 2020 | 03:27 PM
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W205 C300 Coupe
I've got a set of Michelin PS4S being fitted to my C300 this week - I'll let you know how it goes. I find the stock Pirelli runflats to be pretty horrible!
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Old Mar 4, 2020 | 01:37 PM
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Originally Posted by GringoBling
fix a flat cans work really well too.
That's what I intend to carry when the run-flats go later this year. In reality, flats are extremely rare, and since I carry three levels of roadside insurance (MB, AAA, and my insurer) I'm not concerned about it.
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Old Mar 4, 2020 | 07:28 PM
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A gaggle of MB's
I leased a 2020 for my daughter - took off the OE "Extended Mobility" (Run Flat) tires and put them in my garage to go back on for Lease Turn In.

A decent set of "normal tires" - the C handles like a entirely different (and better) sedan - especially on curves at speed - since the "Run Flats" have a super stiff sidewall component that "fight's back" on curves.

Yes - can of Fix-A-Flat - no need to go the MB brand "Tire Fit" goo.
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Old Mar 4, 2020 | 11:31 PM
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In addition to the fix-a-flat sealant you could need one of those 12v air compressors (available at Walmart, etc.).
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Old Mar 5, 2020 | 04:48 AM
  #14  
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c class
What kind normal tires are you using ? Local shops have refused to put none runflats for me.
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Old Mar 5, 2020 | 03:50 PM
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You need to find a different tire shop. It's not a safety issue.
I hate my runflats, can't wait to get new tires.
I keep getting flats???
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Old Mar 6, 2020 | 09:35 PM
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2020 Mercedes SLC300
I'm seriously considering dumping the Conti run-flats on mine too. The harsh ride and flat spotting really bugs me. I've been looking at donut kits for a spare but I'm not certain if I'll have enough clearance for the calipers (have the larger ones with the AMG package). Wondering if anyone has tried one.
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