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Has anyone replaced their run-flats to non run-flat tires?

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Has anyone replaced their run-flats to non run-flat tires?

 
Old 07-10-2018, 11:28 PM
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Has anyone replaced their run-flats to non run-flat tires?

Has anyone replaced their run-flats to non run-flat tires?

I hear by doing this it makes a big difference in terms of ride quality - please real experiences only. haha. not saying you can't comment. but want real experiences rather than just recommendations/opinions - hope you understand =)
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Old 07-11-2018, 11:09 AM
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Big issue with replacing the stock run-flats with regular tires is the lack of a spare. You can buy a spare wheel and tire, but that's another expense and it would take up too much of the trunk.

As for ride quality, try adjusting the tire pressure before making a decision. I've found that inflating the run-flats on my car above the recommended PSI results in a harsh ride, and several others have said that pressures below the recommended levels also result in a harsh ride. I now keep my tires at the PSI stated on the inside of the gas flap, and I'm pretty happy with the ride I'm getting.
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Old 08-03-2018, 09:07 PM
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I replaced my stock 245/45R18 Goodyear run flats with Hankook Ventus Noble S2 245/45R19. Now, before all the keyboard warriors come out of the woodworks, I understand that adding a bit more tire will throw my speedometer off a bit. I don’t care. The ride improved slightly which I am ok with considering I bumped up in wheel size. The ride height went up about .25” to .50” and now I can clear a curb easily. I have 12mm spacers in the front and 14mm on the rear. Offset on all 4 wheels is at 42mm. The stance and fit or on point now. As for spare, run flats are a joke and you shouldn’t drive on them any way. Pull over and call roadside. I do mostly city driving, so it works for me. I highly recommend it. Wheels are Niche Gamma 5x112 42mm.

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Old 08-03-2018, 10:17 PM
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If you don't want keyboard warriors don't make opinionated claims as fact. Run Flats aren't a joke and I've had no issue riding on them. In fact, I was very happy to have the ability to safely make it to my dealer when a nail decided to take up residence in one of my tires not long ago. As to what you did for your car, if you're happier with the speedometer being off a bit, cool for you.
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Old 08-03-2018, 10:35 PM
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But how is saying that run flats are a joke an opinionated fact? Just my opinion, that's all. I sell these cars every day and see these "extended mobility" tires come in pieces on a flatbed all the time. The OP asked for real-life experiences, so I shared mine and so did you. It's all good.
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Old 08-03-2018, 10:39 PM
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Originally Posted by EbonyBenz View Post
But how is saying that run flats are a joke an opinionated fact? Just my opinion, that's all. I sell these cars every day and see these "extended mobility" tires come in pieces on a flatbed all the time. The OP asked for real-life experiences, so I shared mine and so did you. It's all good.
Because it's your opinion. You said "run flats are joke." They're not. And "you shouldn't drive on them." Your opinion, and not one I share.

If you had said simply you don't want or like run flats and you changed yours, that's fine. But don't tell me what I should or shouldn't drive on.

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Old 08-04-2018, 06:05 PM
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Originally Posted by rbrylaw View Post
Because it's your opinion. You said "run flats are joke." They're not. And "you shouldn't drive on them." Your opinion, and not one I share.

If you had said simply you don't want or like run flats and you changed yours, that's fine. But don't tell me what I should or shouldn't drive on.
The Run flat tires on my car are worn out at 14k miles, both front and back. Asked the dealer wtf they said, you are driving the car too hard. Haha ok...They are at .5mm. I drive highway everyday 90% and my cars been sleeping at service majority of the time that ive had it. The car drives like **** and doesn't handle potholes as it should. Run flats are the worst.
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Old 08-04-2018, 06:16 PM
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Originally Posted by Mbracer26 View Post
The Run flat tires on my car are worn out at 14k miles, both front and back. Asked the dealer wtf they said, you are driving the car too hard. Haha ok...They are at .5mm. I drive highway everyday 90% and my cars been sleeping at service majority of the time that ive had it. The car drives like **** and doesn't handle potholes as it should. Run flats are the worst.
Sorry your tires wore out so fast, but I still don't agree they are the worst. I drove my C300 for 3 years, which I traded today for an E400 and the tires were wearing just fine on them. Perhaps you do drive hard?

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Old 08-04-2018, 06:47 PM
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Originally Posted by Mbracer26 View Post
The Run flat tires on my car are worn out at 14k miles, both front and back. Asked the dealer wtf they said, you are driving the car too hard. Haha ok...They are at .5mm. I drive highway everyday 90% and my cars been sleeping at service majority of the time that ive had it. The car drives like **** and doesn't handle potholes as it should. Run flats are the worst.
Were the tires Michelin? The last 2 sets of Michelins I had wore out at less than 10,000 miles on the tires. The first set was replaced by Michelin free. The second set was replaced again by Michelin with 5,500 miles on them. This was with very conservative all town driving. I sold the car with 100 miles on a new set of tires. When I bought my E300 I specified Pirelli tires. They are a year old and wearing well.
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Old 08-04-2018, 07:01 PM
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Whoa! Better be careful with your opinions or the Run-flat Police might get you.
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Old 08-04-2018, 07:19 PM
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Originally Posted by EbonyBenz View Post
Whoa! Better be careful with your opinions or the Run-flat Police might get you.
That's right. Trooper RFT at your service! In all seriousness, RFT's are a compromise. But they're not atrocious as some here seem to claim. My Pirelli's were at 15K miles on the car I traded today, showing virtually no signs of wear. Other's may have a different experience and it does depend on how one drives too.

My new E400 I picked up today came with Continental ProContact 19". If I get near 20K miles, I'll be happy. If I get more, I'll be delighted. My boss's S550, with Continental's lasted 21K miles before needing to be replaced. another good friend with a S550, got 19K miles out of whatever tire they put on his car. This is the nature of RFT. We're not going to get 40 - 50K miles out of them. But they don't leave us stranded if they're punctured, so again, it's a compromise.

Last edited by rbrylaw; 08-06-2018 at 01:06 PM.
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Old 08-06-2018, 04:01 PM
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Originally Posted by ua549 View Post
Were the tires Michelin? The last 2 sets of Michelins I had wore out at less than 10,000 miles on the tires. The first set was replaced by Michelin free. The second set was replaced again by Michelin with 5,500 miles on them. This was with very conservative all town driving. I sold the car with 100 miles on a new set of tires. When I bought my E300 I specified Pirelli tires. They are a year old and wearing well.
I think they are bf goodrich, complete garbage. my non runflats go out to about 45k miles. conti. procontact or michelins.Never had a issue with them. the continentels do start to run rougher as it ages and louder.
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Old 08-06-2018, 04:04 PM
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Originally Posted by rbrylaw View Post
Sorry your tires wore out so fast, but I still don't agree they are the worst. I drove my C300 for 3 years, which I traded today for an E400 and the tires were wearing just fine on them. Perhaps you do drive hard?
none at all, its always highway driving and i even put my car in E-mode. My regular tires gave me 45k all the time. It might be the brand of tires that mercedes has installed.
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Old 08-06-2018, 04:09 PM
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Originally Posted by Mbracer26 View Post
none at all, its always highway driving and i even put my car in E-mode. My regular tires gave me 45k all the time. It might be the brand of tires that mercedes has installed.
You may have stated this, but are you rolling around on 18" or 19" tires? As tires go lower profile, they wear out faster. It's the nature of the beast.
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Old 08-06-2018, 09:06 PM
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Most RFTs have terrible mileage lifespans. Don't ask me why though.
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Old 08-06-2018, 09:25 PM
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Originally Posted by superangrypenguin View Post
Most RFTs have terrible mileage lifespans. Don't ask me why though.
A study by J.D. Power found that people replaced their run-flat tires an average of 6,000 miles sooner than owners using conventional tires. Opinions differ on the reason, but one theory is that tire makers put a soft tread compound on a run-flat tire to counter the hard ride. A side effect of the softer compound is a shorter tread life.

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Old 08-06-2018, 10:16 PM
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Originally Posted by rbrylaw View Post
A study by J.D. Power found that people replaced their run-flat tires an average of 6,000 miles sooner than owners using conventional tires. Opinions differ on the reason, but one theory is that tire makers put a soft tread compound on a run-flat tire to counter the hard ride. A side effect of the softer compound is a shorter tread life.
Learned something new today. Thank you @rbrylaw
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Old 08-06-2018, 10:35 PM
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Makes perfect sense. My C300 I returned with about 32k miles on the continental procontacts. was close to bald but still had some tread. RFT 2015 C300 oem tires.
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Old 08-07-2018, 05:10 PM
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Originally Posted by rbrylaw View Post
You may have stated this, but are you rolling around on 18" or 19" tires? As tires go lower profile, they wear out faster. It's the nature of the beast.
my w212 had the 19" amg rims on them, this one has the 18"rims, bf goodrich tires.
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Old 08-07-2018, 05:16 PM
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Originally Posted by Mbracer26 View Post
my w212 had the 19" amg rims on them, this one has the 18"rims, bf goodrich tires.
I would have expected you'd get more mileage out of the 18." As I previously mentioned, my C300, which I traded in this past Saturday with 18" Pirelli RFT had 15K miles on them and they weren't showing any signs of wear.
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