Run flats - How harsh are they really?

[TW]Fox;16510821 said:
BMW M Mobility Pack, which is what the M cars without runflats or spares get - it's basically a pump and a can of sealant. It was £130 from BMW.
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£130 for a can of bmw branded tyre weld? :eek: Can grab it for a tenner in halfords.
 
My 1 series on runflats is a much harsher ride than the Z4, which most would describe as 'firm'.

Can't say I'm a fan of them, the only positive being that no matter how I drive it they don't seem to wear down.
 
run flats on the 335i were bloody awful, would be the first thing id change! unpredictable, noisy,bumpy and generally rubbish
 
I've got Pirelli Euforia run flats on the Mini and they're pretty harsh, feel like they're solid tyres rather than filled with air. As soon as I decide what wheels I like I'll be replacing them.
 
Bubo said:
I'm considering my options on the new car I want to get which is either going to be an E90 or an E92, leaning towards an E92 at the moment. One thing I am in doubt about are the relative ride quality issues ascociated with run flats on this car. The SE versions of the car seem to normally come with 17" wheels, which from what I can gather are not too bad given the suspsension is set up for run flats on these cars. I heard however that the 18" wheels on M Sports are getting towards the teeth loosening end of things. Now there is one near me which looks just the job but has 19" wheels. Prior to me actually seeing for myself how the ride varies between these cars, does anyone here have any experience of the effects of these different wheel sizes with run flats, partiularly the 19"?
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My E92 has runflats and 19" wheels,the ride is bone shaking on all but the smoothest roads, but saying that the midlands roads are crap at the moment. They have only done 5k miles so not swapping them yet but won't be getting runflats when I do change them. The 18" wheels are not half as bad on SWMBO's 1 series and I would be happy with them.
 
Finglonga said:
They have only done 5k miles so not swapping them yet but won't be getting runflats when I do change them.
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One thing probably worth mentioning since I've seen it on others sites when researching runflats is don't forget to tell your insurance company you've changed to non run flats. You probably are know this already, though nothing lost mentioning it, since insurance companies will use any excuse to get out of paying out obviously.
 
Had my pop's E90 330i M-Sport for a week and didn't notice any issues.......

which meant it rode just as hard as my passat which is running coilovers at a low height, with the dampers set on 4 out of 5 (5= max stiffness)

Both cars running 18's with almost the same tyre profiles so I'd say the BMW has a damn hard ride with runflats.
 
Finglonga said:
My E92 has runflats and 19" wheels,the ride is bone shaking on all but the smoothest roads.
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My 335i has 19" wheels and runflats too and it can be very uncomfortable at times on poor quality roads, it even has a harder ride than the Audi TT I used to have with 18" wheels and that was a hard ride.
 
06 320D SE with 16" Alloys i believe. Can't complain tbh with the run flats on it. Saying that my previous car was a 57' Ibiza FR with 17" Alloys and G-String tyres with suspension so stiff on some cambers when parked i've seen one wheel in the air :D That was an incredibly crashy bone jarring ride.
 
I'm being totally honest now, the LCI E60 530d I test drove had 18" RFTs. The car I bought had 19" non RFTs. The difference, despite the increase in wheel size is night and day in both ride, grip and general handling.
 
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