Why is BMW moving away from offering run-flat tires?

garyfried · 10-03-2023, 09:30 AM

Quote:

Originally Posted by tturedraider

He seemed to indicate it was the EVs that were no longer getting run flats, so I asked a question to clarify. Idiot! No need to respond. You are now on my ignore list. My patience for idiots like you on this forum is over. After 17 1/2 years on this forum I’m now up to a total of ten. Five added just this year.

Please add me to your list also. If there is no room in your life for an alternate opinion you must be a ball of laughs to live with.

RobotDoctor · 10-03-2023, 10:58 AM

Quote:

Originally Posted by geko29

Similar story. We have four cars, and in 2018 traded the last one with a spare. With the recent replacement of the factory RFTs on the Q7, we are now running non-RFTs with no onboard spare on all 4 cars.

Unlike you, I've had plenty of flats--par for the course when running low profile tires on Chicago's shitty roads. But what I have NOT had is a single flat tire that could not be reinflated and driven on. I keep a portable inflator in the trunk of every car, and that will get me home, where I can put on one of the winters while the summer gets repaired.

I know I am dodging bad luck, a flat tire. I have about 1/2 life left on my tires so they should last another year or so. Living in northeast Florida our roads are actually pretty good and I don't have to endure snow/ice and evolving pot holes. I am keeping an open mind regarding RFs but am also looking at non RFs.

Tejas1836 · 10-03-2023, 02:26 PM

Quote:

Originally Posted by RobotDoctor

I know I am dodging bad luck, a flat tire. I have about 1/2 life left on my tires so they should last another year or so. Living in northeast Florida our roads are actually pretty good and I don't have to endure snow/ice and evolving pot holes. I am keeping an open mind regarding RFs but am also looking at non RFs.

I've never known anyone that switched to conventional non-RFs that has gone back. The decrease in NVH and better handling I think is the reason.

tturedraider · 10-03-2023, 07:03 PM

Quote:

Originally Posted by garyfried

Please add me to your list also. If there is no room in your life for an alternate opinion you must be a ball of laughs to live with.

Done. It’s evident reading comprehension is not your strong suit.

LogicalApex · 10-07-2023, 05:49 PM

Quote:

Originally Posted by Bc2005

I was told by the dealer (not always the best source) that BMW can get slightly better range with EVs that have the low rolling resistance go-flat tires, so they are not using run-flats.

I’ve also noticed that if you look at the range specs for EVs, in many cases the range changes a little based on tire selection. Seems crazy that tires would have that much effect on EV “mileage”.

Tire weight and “rolling resistance” has impact on the range (and thus fuel economy) of all vehicles. EVs are the only vehicle type where range itself is a competitive differentiator so BMW is focused on the largest number they can get.

LOFT · 10-09-2023, 02:01 PM

Question and then an opinion:

Does the battery configuration on BMW EV's permit a spare in the trunk?

My 2022 45e runs RFT's on air suspension which appears to mitigate any ride issues for me, and I've been driving cars/trucks for over 50 years. The "add on" battery for the plug-in design sits when the spare tire would be in the trunk.

Nahlem · 10-12-2023, 05:09 AM

had them on my m235i a long time ago what shit tires they were back in 2014-2015 then changed the tires and the ride went from horrible/crashy to actually wonderfully nice and actually feeling the road i am driving on. The tires RTF ones back then simply killed the feel in the car. I don't know now a couple of generations later if its the same but back then they were shit.

jamesinaz · 10-17-2023, 10:29 AM

End of the day I think choice would be nice but I do understand manufacturing and inventory issues so if they had to choose OK. For any car I buy I'm fine with the non-RFT as I prefer better ride and less expensive. On my wife's car I like the idea of RFTs which she had on her X3. Now she is in a Q3 and no RFTs so if she gets a flat tire the first thing she will do is call me even if I'm in Thailand and it's 2 AM there. (sigh)

TheMidnightNarwhal · 10-17-2023, 11:54 AM

Quote:

Originally Posted by jamesinaz

End of the day I think choice would be nice but I do understand manufacturing and inventory issues so if they had to choose OK. For any car I buy I'm fine with the non-RFT as I prefer better ride and less expensive. On my wife's car I like the idea of RFTs which she had on her X3. Now she is in a Q3 and no RFTs so if she gets a flat tire the first thing she will do is call me even if I'm in Thailand and it's 2 AM there. (sigh)

You do realise you can just go out and buy RFT tires and mount them? There's your choice

jamesinaz · 10-17-2023, 04:04 PM

Quote:

Originally Posted by TheMidnightNarwhal

You do realise you can just go out and buy RFT tires and mount them? There's your choice

Not quite the same as the choice to buy the car with them versus paying for a second set of tires on a new car.

geko29 · 10-19-2023, 04:23 PM

Quote:

Originally Posted by jamesinaz

Not quite the same as the choice to buy the car with them versus paying for a second set of tires on a new car.

True, but once upon a time those of us who DON'T want RFTs were in a similar situation. Either don't buy the car at all, or put different tires on it right away. I think I binned the factory tires on my E90 before I'd had it a week.

I agree it would be better to have the choice as part of the ordering/purchase process. But if they're going to choose a side, I think fewer people will be upset with non-RFTs being that default.

chris719 · 10-19-2023, 04:30 PM

RFT tires are way more prone to damage. That is the real big issue with them.

BG42 · 10-19-2023, 04:35 PM

Quote:

Originally Posted by chris719

RFT tires are way more prone to damage. That is the real big issue with them.

I got less than 500 miles on my oem run flats before a bubbled side wall. I swapped the oem runflats for 4s now at 5k miles same roads no issues.

chris719 · 10-19-2023, 05:36 PM

Quote:

Originally Posted by BG42

I got less than 500 miles on my oem run flats before a bubbled side wall. I swapped the oem runflats for 4s now at 5k miles same roads no issues.

Yep, everyone I know with a BMW with RFTs in this area has the same problem. It's not just Bridgestone too, seen the Pirellis do it.

BG42 · 10-19-2023, 07:47 PM

Quote:

Originally Posted by chris719

Yep, everyone I know with a BMW with RFTs in this area has the same problem. It's not just Bridgestone too, seen the Pirellis do it.

Mine were pirellis.

10-09-2023, 02:01 PM	#50
LOFT Second Lieutenant 196 Rep 285 Posts Drives: BMW X5 45e Join Date: Jan 2022 Location: Toronto iTrader: (0)	Question and then an opinion: Does the battery configuration on BMW EV's permit a spare in the trunk? My 2022 45e runs RFT's on air suspension which appears to mitigate any ride issues for me, and I've been driving cars/trucks for over 50 years. The "add on" battery for the plug-in design sits when the spare tire would be in the trunk.
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10-12-2023, 05:09 AM	#51
Nahlem Captain 1198 Rep 912 Posts Drives: None atm Join Date: Sep 2014 Location: Sweden iTrader: (0)	had them on my m235i a long time ago what shit tires they were back in 2014-2015 then changed the tires and the ride went from horrible/crashy to actually wonderfully nice and actually feeling the road i am driving on. The tires RTF ones back then simply killed the feel in the car. I don't know now a couple of generations later if its the same but back then they were shit. __________________ Current Car: Bicycle Former Car:BMW i4 M50 Brooklyn Grey (MY22)\| BMW i3s BEV (MY19)\|Former Car: BMW X1 20d x-drive (MY16)\|BMW m235i (MY14)\|Former Car: BMW 120d (MY12)\|Former Car: Volvo C30 T5 R-Design (MY08)\|Former Car: Volvo C70 T5 (MY06)\|Former Car: Volvo S40 2.0T(MY1999)
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10-17-2023, 10:29 AM	#52
jamesinaz Lieutenant 1863 Rep 403 Posts Drives: 2013 X3 2017 540i Join Date: Feb 2020 Location: Arizona iTrader: (0) Garage List 2021 BMW X5 x40i [0.00]	End of the day I think choice would be nice but I do understand manufacturing and inventory issues so if they had to choose OK. For any car I buy I'm fine with the non-RFT as I prefer better ride and less expensive. On my wife's car I like the idea of RFTs which she had on her X3. Now she is in a Q3 and no RFTs so if she gets a flat tire the first thing she will do is call me even if I'm in Thailand and it's 2 AM there. (sigh)
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10-19-2023, 04:30 PM	#56
chris719 Major General 7601 Rep 7,528 Posts Drives: '08 M Roadster Join Date: Oct 2007 Location: NJ iTrader: (0)	RFT tires are way more prone to damage. That is the real big issue with them.
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