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Hit huge pothole. Sidewalk blowout

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Old 11-25-2018, 02:48 PM
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Hit huge pothole. Sidewall blowout

Hi All. I hit a huge pothole in the city and immediately the tire pressure warning came up. It went to 0 psi in a matter of 10 seconds. Anyway, I know I’m on run flats, but something seems odd. I’m not sure if RFs work with a sidewall blowout. I was five minutes from home and limped back under 20mph. It’s making a creaking and rubber noises, though steering feel is the same. This is the front right. Now that it’s Sunday I really have to just let the car sit overnight. I’ve never experienced a flat RF so I’m not sure if this is normal. I don’t see how anyone could drive up to 50mph on this. It seems unsafe and I don’t want to risk rim damage. Do you think I should flatbed it instead?

Last edited by joshg1001; 11-25-2018 at 10:01 PM.
Old 11-25-2018, 02:59 PM
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Yes.

Do not drive on the tire with a sidewall blowout. Either remove it and take it in for repair, or flatbed. The former is easier and probably cheaper where you live.
Old 11-25-2018, 04:26 PM
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If you have runflat tires, you can drive them a limited distance to safety or a shop at low speed without damaging the car. I once had to drive mine about 20 miles on side roads. It sounded terrible, but got me there with no issues.
Old 11-25-2018, 05:41 PM
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With a sidewall blowout? Indeed.
Old 11-25-2018, 06:00 PM
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I think sidewall blowout would convince me to have it flat-bedded into dealer. Sidewall structure is part of what enables a runflat tire to operate with zero pressure. Assuming sidewall is significantly damaged, it may not properly support the weight of the car - at least not for long. If the rim is already damaged, maybe it matters less, but especially if the rim is not damaged, I would have it transported to dealer to avoid additional damage.
Old 11-25-2018, 08:59 PM
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Originally Posted by joshg1001
Hi All. I hit a huge pothole in the city and immediately the tire pressure warning came up. It went to 0 psi in a matter of 10 seconds. Anyway, I know I’m on run flats, but something seems odd. I’m not sure if RFs work with a sidewalk blowout. I was five minutes from home and limped back under 20mph. It’s making a creaking and rubber noises, though steering feel is the same. This is the front right. Now that it’s Sunday I really have to just let the car sit overnight. I’ve never experienced a flat RF so I’m not sure if this is normal. I don’t see how anyone could drive up to 50mph on this. It seems unsafe and I don’t want to risk rim damage. Do you think I should flatbed it instead?
Well if you blew out the sidewalk that's quite the pothole.

I believe the Pirelli's are supposed to have a road hazard warranty with their run flats, most other brands don't.

I wouldn't drive the car, either have it towed to the dealer or take the tire off and take it to the dealer/tire shop. I wonder if you can use the $150 off $300 coupon mentioned earlier on the tire if they say it's not covered.
Old 11-25-2018, 09:52 PM
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Originally Posted by cetialpha5
Well if you blew out the sidewalk that's quite the pothole.

I believe the Pirelli's are supposed to have a road hazard warranty with their run flats, most other brands don't.

I wouldn't drive the car, either have it towed to the dealer or take the tire off and take it to the dealer/tire shop. I wonder if you can use the $150 off $300 coupon mentioned earlier on the tire if they say it's not covered.
I'm thinking that elimination of the spare tire, which benefits Mercedes in various ways, but, as far as I can tell, does nothing to benefit the customer, they should include wheel and tire coverage as part of the factory warranty. Too radical?

Last edited by Cao Black; 11-25-2018 at 10:01 PM. Reason: typo
Old 11-25-2018, 10:02 PM
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lol I just noticed my auto correct kept putting "sidewalk" instead of side wall. Anyway, yeah it was quite the hole, and I saw it coming and yelled out loud to my passengers to brace. I couldn't do anything to swerve. I also wonder if service coupons that are "spend this amount, save this amount" would work but I think those exclude tires.
Old 11-25-2018, 10:08 PM
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Yeah, I surprised no one else picked up on the sidewalk part. I was also going to suggest not driving on the sidewalk too.

The service coupon is pretty bare just says:

Schedule service for your car from now until December 31st, and you'll enjoy $150 off vehicle maintenance of $300 or more. With our comprehensive service, your Mercedes-Benz will be ready to take on the winter season ahead.

*For vehicle maintenance of $300 or more. One-time use only. Must present at time of purchase to receive offer. Valid at participating Mercedes-Benz dealerships through 12/31/18. Cannot be combined with other offers. Not valid on previous purchases.

Someone else mentioned that it also worked for a battery. In the past it hasn't worked on a key though because that's just considered parts, not service.
Old 11-26-2018, 02:00 AM
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Originally Posted by joshg1001
Hi All. I hit a huge pothole in the city and immediately the tire pressure warning came up. It went to 0 psi in a matter of 10 seconds. Anyway, I know I’m on run flats, but something seems odd. I’m not sure if RFs work with a sidewall blowout. I was five minutes from home and limped back under 20mph. It’s making a creaking and rubber noises, though steering feel is the same. This is the front right. Now that it’s Sunday I really have to just let the car sit overnight. I’ve never experienced a flat RF so I’m not sure if this is normal. I don’t see how anyone could drive up to 50mph on this. It seems unsafe and I don’t want to risk rim damage. Do you think I should flatbed it instead?
a bit late but I went through basically the same and drove it for just a couple hundred feet (was on a bridge decided wasn’t best to just stop) at very slow speeds until I was able to safely park to wait for the flatbed.

Heres what mine looked like (wider shot of the close up I posted in the boo boo thread)




Mike
Old 11-26-2018, 02:12 AM
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Ouch Mike. That looks much worse than mine. I didn't get any tire damage, and my side wall rip was just along the rim protector portion of the tire.
Old 11-26-2018, 08:38 AM
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Why do the richest cities have the worst roads?
Old 11-26-2018, 10:30 AM
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Originally Posted by nycebo
Why do the richest cities have the worst roads?
It's more like the largest cities have the worst roads and the snow belt towns have bad roads too.

In my city 20 miles west of Tampa, I have not seen a pot hole in years, no, make that decades.
Old 11-26-2018, 10:33 AM
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I love landing in Tampa and driving across the Howard Frankland (is it still called that) on my way to Longboat. It's literally glass. One never sees that up in NYC...never. Even after the road is repaved, the concrete has horrible seams OR the asphalts feels like rolling waves. It's surreal. Then again, I guess it could be worse. It could be unpaved altogether.

Anyway, sorry for the off topic rant...
Old 11-26-2018, 11:35 AM
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Longboat Key is a great place to escape the rat race. How much time do spend on the key? I'm surprised you don't fly into SRQ.

Last edited by ua549; 11-26-2018 at 11:40 AM.
Old 11-26-2018, 11:54 AM
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@ua549 It's a spectacular place. I love watching the sunset over the gulf every night...with my bourbon rocks in hand.

I get down there about 4+ time per year to visit my folks.

As for SRQ, yes, it would be easier, but many more flight options to TPA out of LGA. And candidly, what with the 70 mph speed limit and the previously mentioned glass highways, the drive from LBK to TPA takes about the same time as the drive from LGA to my apartment in Manhattan. Go figure.
Old 11-26-2018, 12:56 PM
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Originally Posted by joshg1001
Hi All. I hit a huge pothole in the city and immediately the tire pressure warning came up. It went to 0 psi in a matter of 10 seconds. Anyway, I know I’m on run flats, but something seems odd. I’m not sure if RFs work with a sidewall blowout. I was five minutes from home and limped back under 20mph. It’s making a creaking and rubber noises, though steering feel is the same. This is the front right. Now that it’s Sunday I really have to just let the car sit overnight. I’ve never experienced a flat RF so I’m not sure if this is normal. I don’t see how anyone could drive up to 50mph on this. It seems unsafe and I don’t want to risk rim damage. Do you think I should flatbed it instead?
I live in Oakland so this kind of thing is pretty close to home. How fast were you going / how deep was the pothole (by your estimate)? I don't drive low-profile tires in the city much so just curious how much force it takes for this to happen (and how common it is). Makes you wonder about that W&T insurance...
Old 11-26-2018, 02:01 PM
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Originally Posted by nycebo
@ua549 It's a spectacular place. I love watching the sunset over the gulf every night...with my bourbon rocks in hand.

I get down there about 4+ time per year to visit my folks.

As for SRQ, yes, it would be easier, but many more flight options to TPA out of LGA. And candidly, what with the 70 mph speed limit and the previously mentioned glass highways, the drive from LBK to TPA takes about the same time as the drive from LGA to my apartment in Manhattan. Go figure.
Longboat Beach Club is our favorite get away for a few days spot. We go 3 - 4 times a year for a long weekend. So many great restaurants and shopping options at St. Armand's Circle and the beaches just can't be beat. Of course for us here in Tampa, it's just an hour away, but seems like we're on a Caribbean island! I was hoping we might go for a couple nights between Xmas and New Years, but rates starting at over $900/night put an end to that notion. LOL
Old 11-26-2018, 02:32 PM
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My wife's volvo went thru 4 tires in a years time,all from potholes & sidewall damage.Even small sidewall blebs seem to expand over time.

you can't fix them,only replace them.

many years ago,when I damaged a sidewall,the tire shop would put a tube in.Not any more.
Old 11-26-2018, 02:43 PM
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I have read a lot of articles about the increased incidence of blowouts owing to run-flat tires. Some quotes:

"The J.D. Power study found that “customers with vehicles equipped with run-flat tires are nearly twice as likely as those with vehicles equipped with standard tires to have to replace a tire due to a flat or blowout."
"The J.D. Power and Associates study shows that customers prefer non-run flat tires and that standard tire designs prove to be more durable that run-flat tires by a significant amount."
Old 11-26-2018, 06:29 PM
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Originally Posted by joshg1001
Ouch Mike. That looks much worse than mine. I didn't get any tire damage, and my side wall rip was just along the rim protector portion of the tire.
Glad yours wasn’t as bad, hopefully you’re up and running again!

Mike
Old 11-27-2018, 11:39 AM
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So I did have to call Mercedes assistance and got the car flat bedded to Mb of SF. I realize I did not have an appointment, but it was like pulling teeth to get a 15 minute job done the same day. Everyone I dealt with, while not specifically rude, were not really warm or eager to help a guy out. Anyway, $370 later, she's fixed.

Also, While the car was in, I was told there was a recall on the transmission programming, but when I searched for this afterwards on the MB Recall website, I did not locate anything. Anyway, I turned it down since I didn't have time to wait.
Old 11-27-2018, 12:05 PM
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OP, you should bill your city.
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Old 11-27-2018, 12:46 PM
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Originally Posted by joshg1001
Anyway, $370 later, she's fixed.
Fixed or replaced? That wheel looked bad.
Old 11-27-2018, 03:27 PM
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Just put my down payment on for Dec European delivery and declined the wheel and tire. Rethinking it now, what has everyone been paying for it?


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