Run flats v 'normal' tyres

Run flats v 'normal' tyres

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Davey S2

Original Poster:

12,548 posts

218 months

Thursday 14th May 2015
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I have a 2010 320d which is currently on Bridgestone run flats.

I need to replace all 4 tyres in the next month or so and Am toying with ditching the run flats and going with normal tyres.

I assume a fair few other people have also done this? What are the pros and cons?

Obviously if you have a flat then you have to stop but run flats are only good for 30 or so miles anyway. If you have decent breakdown cover then you can get picked up. Is there a generic space saver you can just stick in the boot?

What are a decent tyre choice at the moment? The car is only used for motorway commuting so I don't need the last word in feel and performance.

Thanks

anonymous-user

18 months

Thursday 14th May 2015
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Oh, no....... Not again?!

Smuler

2,266 posts

103 months

Thursday 14th May 2015
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If you're not bothered about feel/performance stick with RFTs. Otherwise to make the change worthwhile look to save money and go "mid range". I don't know your type of car, but my mid range choice was Hankook.

cvega

377 posts

123 months

Thursday 14th May 2015
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just replaced my bridgestone runflats (re050a) with michelin pilot sport 3s. I must say a big change, car feels more comfortable an much less "crashy" over bumps. I was considering kumho but only went with ps3s as price difference was about £100 and michelins had far better reviews..

Technomad

753 posts

127 months

Friday 15th May 2015
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Unless you have a paranoid need for the Run-Flat bit, change: BMW engineers must (in fact, they do - I've spoken to one about it) weep at the damage the marketing department does by putting runflats on their cars. We've had three RFT-equipped cars on which we've swapped and, in each case, the difference to ride quality has been dramatic, with a lesser improvement in road noise. On a 123D with the 18" wheels, I put non-RFT 17"s on as winter tyres and the result was so dramatic that I kept them on all year - apart from ride quality, traction was dramatically improved, as the RE05A RFTs would skip off a matchstick - I was getting the TC kicking in in 4th on local roads. That all stopped with the non-RFTs and life became a lot more fun. Pre-LCI E70 X5 went from feeling like we were driving a tank over concrete blocks to actually being quite pleasant and current DD, an LCI E70, has turned from being a bit harsh to a proper limo ride.

In general, the turn-in on non-RFTs is slightly less sharp than with the RFTs but is much more linear and progressive, which I prefer.

RicksAlfas

10,976 posts

208 months

Friday 15th May 2015
quotequote all
Davey S2 said:
I have a 2010 320d which is currently on Bridgestone run flats.

I need to replace all 4 tyres in the next month or so and Am toying with ditching the run flats and going with normal tyres.

I assume a fair few other people have also done this? What are the pros and cons?

Obviously if you have a flat then you have to stop but run flats are only good for 30 or so miles anyway. If you have decent breakdown cover then you can get picked up. Is there a generic space saver you can just stick in the boot?

What are a decent tyre choice at the moment? The car is only used for motorway commuting so I don't need the last word in feel and performance.

Thanks
My 2010 320 ED came on Michelin Energy tyres which aren't run flat. It has a pump and a tub of gloop in the boot so you could just get that kit if you need some emergency back up. It won't help if you have a massive rip in a tyre but would hopefully block a nail or screw hole.

toon10

5,133 posts

121 months

Friday 15th May 2015
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The RFT's on my 3 series were very sharp in the handling department but a nightmare on speedbumps and anything other than a smooth piece of tarmac. Putting Bridgestone Non RFT's on was the best thing I did. 95% of the sharpness when cornering but the ride quality for every day driving is so much better. When pushing hard you do feel the tyres squish a bit more under load but nothing too alarming.

I played with the idea of buying a space saver and lugging it about in the boot but my car only gets used for a short 3 mile commute and the odd trip to the shops, friends or family in the area so if the worst happens, I'll not be too far from home. If I travel for work I use a pool car or if I travel further I use the XC90 which is a better cruiser.

Davey S2

Original Poster:

12,548 posts

218 months

Friday 15th May 2015
quotequote all
RicksAlfas said:
Davey S2 said:
I have a 2010 320d which is currently on Bridgestone run flats.

I need to replace all 4 tyres in the next month or so and Am toying with ditching the run flats and going with normal tyres.

I assume a fair few other people have also done this? What are the pros and cons?

Obviously if you have a flat then you have to stop but run flats are only good for 30 or so miles anyway. If you have decent breakdown cover then you can get picked up. Is there a generic space saver you can just stick in the boot?

What are a decent tyre choice at the moment? The car is only used for motorway commuting so I don't need the last word in feel and performance.

Thanks
My 2010 320 ED came on Michelin Energy tyres which aren't run flat. It has a pump and a tub of gloop in the boot so you could just get that kit if you need some emergency back up. It won't help if you have a massive rip in a tyre but would hopefully block a nail or screw hole.
That's my thinking. Run flats don't give you massive range if you have a blow out anyway. Ok it may get you to the services but you still have to get the AA out anyway.



Andehh

6,376 posts

170 months

Friday 15th May 2015
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I'm also considering this on my F10 & 19" wheels this summer when the tyres come up for replacement. My winters are runflats due to 20% of my driving being country roads & I don't want to risk it in the dark and wet, but for summer tyres i'm very tempted...

Mr Tidy

13,673 posts

91 months

Tuesday 19th May 2015
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I think the wheel size has quite a bearing on whether changing is a good idea - if you have wide 18's or even 19's RFTs may not be the smoothest of rides.
Personal experience is that I had an E46 Compact on 17 inch non-FRTs and got a puncture on a summer day in Windsor Great Park - found a nice tarmacced area off the road and put the space-saver on to get to work.
Next 2 punctures were in my 123d with 17 inch RFTs, but both times it was snowing so I was relieved to just carry on rather than try to change a wheel in slush on a busy A road in falling snow, and the ride was as good as the E46!
But AFAIK the RFTs and Spacesavers are both usable for 100 miles at no more than 50 mph so no advantage either way.
Am tempted to put normal tyres on my Z4 Coupe because in so many ways it is a serious drivers' car, but to be fair a 320d isn't quite as sharp a tool in the first place so does it matter so much?
Just a matter of choice I suppose.

Jonsv8

6,162 posts

88 months

Tuesday 19th May 2015
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Run flats and suspension setups are better than they used to be. Cars more than a few years old will have owners singing the benefits of normal tyres on comfort etc but it's not so bad now. I have a 2012 6 series with 19" wheels and the ride was fine.

However.. I still came off run flats because there are better tyres available. Michelin pilot super sport is a great tyre for instance. Normal tyres are also generally more available and cheaper.

I carry a compressor which will enable a slow puncher to be dealt with by hopping the air up. Bit of a pain but can usually get you somewhere and tyre gunk/foam if you're really stuck. But I've also had a chunk taken out of a tyre that I suspect even an rft wouldn't have coped with. I think continental do a mobility kit (pump/foam) for £20-30 which is what many manufacturers supply if they don't fit rft or a spare

ThunderSpook

2,991 posts

175 months

Wednesday 20th May 2015
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Personally I see run flats as a way to get myself and the family off the motorway to find somewhere safe to stop. You can't do that with a non run flat.

I am fine with the ride quality (2005 E61 M-Sport).

The person who said run flats made the TC kick in in 4th gear, what the hell are you doing to make that happen??

Mr Tidy

13,673 posts

91 months

Thursday 21st May 2015
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ThunderSpook said:
Personally I see run flats as a way to get myself and the family off the motorway to find somewhere safe to stop. You can't do that with a non run flat.

I am fine with the ride quality (2005 E61 M-Sport).

The person who said run flats made the TC kick in in 4th gear, what the hell are you doing to make that happen??
Not too hard I expect on the farm tracks we designate as A roads in the UK - my 123d regularly had the TC light on in 3rd on damp roundabouts and slip roads - would probably have still lit up if I had used 4th instead!

Some bumps get my Z4 TC light on in 3rd in the dry in a straight line (admittedly not when I am driving Miss Daisy style)laugh

Dannbodge

1,795 posts

85 months

Thursday 21st May 2015
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like most other modern BMWs my 335i has the Re050 runflats fitted.

However as my rears are down to <2mm I'm in need of rear tyres. I have had no issues with the ride quality of the tyres but I had a super stiff E36 previously but have found I can spin the wheels with minimal effort in the first 4 gears. I can even get a bit in the dry.

I'm changing to non runflats now as I can get a set of PS3s or Eagle F1s for a cheaper price than I can get 2 rear runflats (It gets even cheaper as my fronts have 6+mm on so will sell for £150ish).

For me it's a massive win win. I get new more grippy and confidence inspiring tyres and I save money in the process. I also gain more comfort on what is already a very comfy car.

Jonsv8

6,162 posts

88 months

Thursday 21st May 2015
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The Eagle asym 2 have quite soft sidewalks so are quite a change from rft although I really like them

smashy

2,735 posts

122 months

Thursday 21st May 2015
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I changed my F30 330d runflats 3 weeks in ,even the 3rd gen are bad,the difference on Michelin PS3s is amazing I feel as though I actually have rubber between me and the road ,they are all full of Ultraseal £70 all in ,REALIST thinks its crap I totally disagree check out youtube and do your research.

gizlaroc

16,391 posts

188 months

Thursday 21st May 2015
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The main difference between a BMW on runflats and on proper tyres is on run flats it is st.

roofer

5,136 posts

175 months

Thursday 21st May 2015
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gizlaroc said:
The main difference between a BMW on runflats and on proper tyres is on run flats it is st.
This man speaketh the truth .

Mr Tidy

13,673 posts

91 months

Friday 22nd May 2015
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roofer said:
gizlaroc said:
The main difference between a BMW on runflats and on proper tyres is on run flats it is st.
This man speaketh the truth .
Thanks - now I have 2 I may have to try the non RFT option!

Frankly I wish all manufacturers had just stuck to a proper spare wheel FFS - was it really that difficult???
Maybe it should have been the subject of an EU Directive!! Quick, get to the Court of Human Rights before we leave!

anonymous-user

18 months

Friday 22nd May 2015
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Mr Tidy said:
Frankly I wish all manufacturers had just stuck to a proper spare wheel FFS - was it really that difficult???
Maybe it should have been the subject of an EU Directive!! Quick, get to the Court of Human Rights before we leave!
A wooden one with spokes? Inner tubes perhaps? (No doubt some on here would say they are 'belt and braces')