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2Addicts | BMW 2-Series forum Technical Topics Wheels and Tires -- Sponsored by The Tire Rack Run flat sucks

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      07-10-2020, 11:38 AM   #1
chichi2er
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Run flat sucks

These run flats are terrible, be hold broken tire number 6 (since 19 delivery), proudly sponsored by Chicago roads yours truly.

How are others with lot hole filled roads getting along?
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      07-11-2020, 08:21 AM   #2
drives like jehu
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I never liked run flats for the ride, etc. I use performance summer tires and dedicated winters.
But I always keep a spare. With a little investigation you can find a setup that works. People complain abt taking up trunk space etc., but I've never found it to be a problem. I have a setup for sale that fits e90 and/or f22. I'm in Chicagoland, let me know if you're interested. I feel lucky I've only had 2 pothole punctures.
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      07-16-2020, 06:51 PM   #3
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I've had a shocking experience with RFTs (I think you're on the same P7 Cinturatos I had) in the pothole infested Philly area. 5 in just under 2 years including 2 full blowouts. These tires are rubbish fragile.

Just dumped mine for regular tires and hoping the ride quality improves noticeably.
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      07-17-2020, 08:52 PM   #4
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Quote:
Originally Posted by optimistic_kid View Post
I've had a shocking experience with RFTs (I think you're on the same P7 Cinturatos I had) in the pothole infested Philly area. 5 in just under 2 years including 2 full blowouts. These tires are rubbish fragile.

Just dumped mine for regular tires and hoping the ride quality improves noticeably.
I had the Bridgestone S001 staggered, summer RFTs for ~25k miles, never had an issue with potholes around LA. The Pirelli Cinturatos must really suck.

Replaced them with go-flat Michelin Pilot Sport 4S and could not be happier. Better ride, turn in & traction, with less road noise. Plus, they are about half the cost of the Bridgestone S001 set-up.

Have AAA & more than one vehicle, so don't really care about the lack of spare tire situation.

Also, put Michelin Pilot Sport A/S-3+ on my wife's Subaru (PS4S don't come in that size), while not quite the PS4S, still a fantastic tire!

Last edited by bthomas518; 07-19-2020 at 05:29 PM..
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      07-18-2020, 08:24 AM   #5
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My Conti5 runflats were 'kind' enough to cup-wear to death at about 7k miles, so I never got a blowout. Switched to nonRFT summer tires (Contis, then Bridgestone s007's) and havent' had any problems, ride, noise, and grip all superior. I sincerely hope the RFT's really are saving a bunch of lives by not having people change tires at roadside, otherwise they are one of the biggest shams yet.
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      07-18-2020, 08:58 AM   #6
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Why do you keep fitting them then? After the second or third blowout you should try to either a) avoid potholes b) switch to nonrunflats c) get smaller wheels, because obviously if you’ve had so many punctures, it’s bound to happen again if you change nothing.
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      07-29-2020, 08:12 AM   #7
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Quote:
Originally Posted by gosi View Post
Why do you keep fitting them then? After the second or third blowout you should try to either a) avoid potholes b) switch to nonrunflats c) get smaller wheels, because obviously if you’ve had so many punctures, it’s bound to happen again if you change nothing.
as a driver who keeps re-fitting these P7 run-flats: (1) i like the safety of the run-flats. i drive the DC beltway and surrounding highways and there's just NO EFFING WAY that i'm stopping to change a tire on the side of any of these roads. i've done that once in 20 years of commuting (in my X3) and it was the most frightening experience of my life...drivers around here are completely insane idiots. run-flats have never failed to get me to the shop for a change, and (2) i really like the look of 18" wheels on this car, so i'm not down-sizing.

my commute is fairly consistent (or at least it was pre-covid) so becoming MUCH more aware of potholes has helped me significantly after the first 2 years and 5 blow-outs.
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      08-01-2020, 03:17 PM   #8
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RFTs suck. Period. Put a st of PSS on the car. Record the serial numbers. Michelin will pay for the tow to wherever to get your tire fixed. PSS are the only tire I'll put on my M240i.
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      08-01-2020, 04:12 PM   #9
chichi2er
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Quote:
Originally Posted by gosi View Post
Why do you keep fitting them then? After the second or third blowout you should try to either a) avoid potholes b) switch to nonrunflats c) get smaller wheels, because obviously if you’ve had so many punctures, it’s bound to happen again if you change nothing.
Got tire insurance for 4 years when I got the car, so just have to bare with it
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      08-16-2020, 10:09 AM   #10
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I think runflats get a bad press because of the BMW USA standard fitting of P7s on the 2 Series. These are never fitted to European 2 Series. Really, I don't think they're the right tyre for this car at all. I used to work for Pirelli and for the life of me I can't understand why these would be fitted. PZero, possibly. P7, nope.

So when people change to another brand, and move to non-RTF then they tend to attribute 100% of the significant improvement to the non-RTF-ness. Yes, I don't doubt the RTF to non-RTF makes for some improvement, but it isn't 100% - more like 20%.

I rarely see reports of anyone moving exactly the same model of tyre from RTF to non-RTF and reporting the improvement. But I'd be happy to hear if anyone has.

So my suggestion would be to change the RTF brand first (absolutely if you have P7s on currently) and then see how you get on. My suspicion is that the improvement would be big enough to make you happy to stay on the RTFs. But if you wanted that extra 20% handling, then move to a non-RTF. Like @happyjack I've had a RTF deflate on the freeway and managed to get home and to the tire dealer the nest day versus a blow-out at speed and/or changing a wheel on the hard shoulder in the rush hour.
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Last edited by msej449; 08-16-2020 at 10:21 AM..
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