run flats on BMW's

Tac

hi all, just a quick question for ye.....i have a 08 520d m.sport and the tyres will soon need replacing. Whats on it at the moment are Michelin pilot run flats...but to replace them i was told i could be looking at over 200yoyo per corner...

can non-run flat tyres be used on the car? ...or will it mess up some sensors?

cheers.

Victor_M

You can use non run flats but you will have to buy a spare wheel and tire too, that's a legal requirement.

TBH €200 per corner (particularly on an '08 5 series) isn't that bad, I had a blowout on one of my run flats last year and didn't even realise I had a puncture, I presumed the sensor on the tire was faulty when the iDrive told me I had a flat.

Check out some of the online retailers they are good value I've used camskill.co.uk

Owen

Victor_M wrote: »

You can use non run flats but you will have to buy a spare wheel and tire too, that's a legal requirement.

Is it?

Nonoperational

Lots of new cars just come with a can of gunk to plug up the tyre until you get it fixed. No use for a proper tear.

route66

Can ordinary tyres be mounted on the original wheels?

And no, as stated above, there is no legal requirement I know of where you must carry a spare. However, I understand if you have a spare, it must be legal.

Owen

Non runflats can be fitted to runflat alloys, but not the other way around. There's definitely no legal requirement to have a spare wheel, many cars are sold with just a compressor and tireweld.

bazz26

I priced run flats for my E90 and I was looking at the bones of €1k for 4 x 18" Bridgestones and they were online prices. I'd imagine the E60 would be around the same.

I sourced myself a 17" space saver wheel up the country and put it in the boot as there is no tyre well in the E90. My run flats are due replacing towards the end of this year and I will be replacing them with standard tyres at about half the price of run flats.

The ride is also supposed to be much improved with non run flats too.

TheBazman

200 per tyre is good , just make sure they are correctly rated. Kumho 18" run flats are around 220/230 normally.

Nissan doctor

Victor_M wrote: »

I had a blowout on one of my run flats last year and didn't even realise I had a puncture, I presumed the sensor on the tire was faulty when the iDrive told me I had a flat.

All that development, testing, money and technology wasted when given to neanderthal man!

If you oil warning light came on would you assume it was faulty?:rolleyes:

Victor_M

Nissan doctor wrote: »

All that development, testing, money and technology wasted when given to neanderthal man!

If you oil warning light came on would you assume it was faulty?:rolleyes:

I check my oil manually every 3/4 weeks! And yes if a fault warning light comes on I believe it.
You missed my point about the run flats, obviously I stopped and checked they tires right away, but the fact is I couldn't feel the puncture in any way, it was my first experience getting a puncture in run flats and I was very impressed.

Re: the legality of the spare, paint doctor you are right, I think an another poster said, if you have a spare it must be legal too.

biko

The spare is only checked that it's not insecurely fastened in an outside carrier.
If the tester sees an issue with the spare wheel he should advise the driver.
That's all the NCT manual says.
It does not mention that a tire must be fitted in boot nor any legal requirements for threads etc.

Seamu$

bazz26 wrote: »

I sourced myself a 17" space saver wheel up the country and put it in the boot as there is no tyre well in the E90. My run flats are due replacing towards the end of this year and I will be replacing them with standard tyres at about half the price of run flats.

The ride is also supposed to be much improved with non run flats too.

Sorry if veering off topic a bit, but Bazz, can I ask what size is the space saver, does it take up much room in the boot & where might one source one? My wife has a 318d E90 and, like you intend to do, we put standard tyres on it instead of run flats on it (and yes, they were less than half the price). I have a standard spare but it takes up most of the boot space so we generally leave it at home & she's just armed with a can of tyreweld & an AA membership! Would like to source a spacesaver like you if I could though.

Cheers

bazz26

Seamu$ wrote: »

Sorry if veering off topic a bit, but Bazz, can I ask what size is the space saver, does it take up much room in the boot & where might one source one? My wife has a 318d E90 and, like you intend to do, we put standard tyres on it instead of run flats on it (and yes, they were less than half the price). I have a standard spare but it takes up most of the boot space so we generally leave it at home & she's just armed with a can of tyreweld & an AA membership! Would like to source a spacesaver like you if I could though.

Cheers

Not sure of the exact dimensions of the space saver but it is 17" in size and obviously alot smaller than a standard wheel, have it in boot with a sheet wrapped around it to stop it moving about. The E90 boot is not huge and I don't really utilise it but the space saver fits nicely and still leaves decent room for other bits and pieces. Had it picked it up by courier in Dublin after it was kindly given to me free of charge by a member of another forum who had no more use for it, lucky timing I guess. Picked up a scissors jack and wheel brace from my local motor factors, these fit nicely into the compartment that where the tyre well should have been.

I think BMW dealers have an aftermarket spare wheel kit available for both the E90 and E60, think it costs around €250 though.

Gumbo

OP, have you got the spare wheel in the boot under the compartment floor?
My dads 09 E60 had the full size space saver in there from the factory.