Run Flats Need to Go . . . Quick Easy Explanation . . .

GanjamanUSS · 09-24-2008, 01:20 PM

Hey there, one of my back runflats is loosing silly amounts of pressure (10psi) every week, and i can't find anyone with Bridgestones in stock to straight swap out, so . . .

Was wondering if someone could tell me a really simple process to swapping the runflats out for normal tyres, am on the M-Sport 19" rims.

Currently the tyre sizes are 225/35/19 255/30/19

What are the simple steps I need to do to change over to normal tyres.

Three places I've called have said I can't do it, I know otherwise I just want a concise listing of what needs to be done.

Ta

Going into BMW Battersea on Monday hopefully they'll sort all the other problems !

MattOz · 09-24-2008, 01:31 PM

Normal tyres will fit onto the alloys. No problem. However, if you're running the lovely looking 225M alloys, just make sure that the reason for the pressure loss is not hairline cracks in the alloy wheel itself.

There have been a large number of 225M alloys cracking under stress from stiff sidewall RFT's and potholes etc. I think there was a thread on it somewhere and a formal response from BMW.

http://www.e90post.com/forums/showthread.php?t=170979

No point changing your tyres if it's the alloys at fault.

Cheers
Matt

sheps · 09-24-2008, 01:44 PM

I have exactly the same wheels as you, running exactly the same tyre sizes.

I changed over to non-run flats approx 6 weeks ago and cannot recommend it enough.

In terms of 'what' needs doing - nothing. The wheel design will quite happily take a run flat or non run flat tyre as it is. Any garage saying you can't do it is talking our of their hole. Those garages saying they "can't" do it actually mean they "wont".

Soooo many people are migrating over to non-run flats because, whilst it is improving, the tyre technology of runflats lumbers you car with, by comparison, flat-footed handling, excessive noise, a crashy ride and not great grip.

When I first had mine done, I thought there was something wrong with the car, it felt all over the place - after some driving I realised this was how the car should handle - alive, delicate, direct - the run flats make the E9X feel like a hobnail boot, when with PS2's on it it feels like a ballet shoe.

Go for it - if the monkey's you've spoken to already try to dissuade you or tell you that you can't do it, you're speaking to the wrong people. Find someone decent and the enjoy your car the way it should feel.

dxb335d · 09-24-2008, 01:44 PM

Are you a drug dealer ganjaman?

booforty · 09-24-2008, 02:17 PM

Quote:

Originally Posted by dxb335d

Are you a drug dealer ganjaman?

Yes he is

willhollin · 09-24-2008, 02:19 PM

Quote:

Originally Posted by dxb335d

Are you a drug dealer ganjaman?

He lurves the crack.

NFS · 09-24-2008, 06:18 PM

Quote:

Originally Posted by willhollin

He lurves the crack.

Smoke only the sensimilla. Never smoke de crack

GanjamanUSS · 09-24-2008, 06:56 PM

LOL I don't sell or do drugs !

The name is an old one that just kinda stuck !

Will add it to the list when BMW Battersea have a lookie on Monday with regards to the alloys can just join the list !

DRUGS ARE BAD

anyway lol yeah

E92Fan · 09-24-2008, 07:39 PM

Quote:

Originally Posted by GanjamanUSS

LOL I don't sell or do drugs !

The name is an old one that just kinda stuck !

Will add it to the list when BMW Battersea have a lookie on Monday with regards to the alloys can just join the list !

DRUGS ARE BAD

anyway lol yeah

Who's dealing with your car at Battersea?? PM me your reg number, and I'll make sure the right people deal with it... have a teeny bit of experience in dealing with the guys at Battersea

GanjamanUSS · 09-24-2008, 09:14 PM

cool mate, PM Sent, its booked in for monday at 9am

thats gonna be a laugh getting there at that time on a monday, can't remember the last time I woke up that early on a weekday !

lol

MOB · 09-25-2008, 04:00 AM

You just need to find a tyre fitter willing to do it - I had 2 say no to me.

Ride quality and tramlining improve a lot, but handling sharpness reduce a tad - noticeable but not an issue for me.

spandeli · 09-25-2008, 04:26 AM

so, let me ask you something, that might have been answered before, so do not flame me pls

what do you do once you have changed to non-runflats, and you do have a flat tire?

MOB · 09-25-2008, 04:58 AM

Either use a can of tyre weld goo that you have remembered to put in the boot, or call the AA

dazzapb · 09-25-2008, 05:39 AM

yep I bought two cans of holts tyre weld just to be safe in Halfords (sale on now) it has a compressor in it too so it will inflate the tyre and goo is transferred

MOB · 09-25-2008, 06:43 AM

Quote:

Originally Posted by dazzapb

goo is transferred

I know its childish, but lol

M3-FAST · 09-25-2008, 07:12 AM

Quote:

Originally Posted by MOB

I know its childish, but lol

I am childish also then

09-24-2008, 01:20 PM	#1
GanjamanUSS Banned 9 Rep 131 Posts Drives: E90 Join Date: Sep 2008 Location: Manchester iTrader: (0)	Run Flats Need to Go . . . Quick Easy Explanation . . . Hey there, one of my back runflats is loosing silly amounts of pressure (10psi) every week, and i can't find anyone with Bridgestones in stock to straight swap out, so . . . Was wondering if someone could tell me a really simple process to swapping the runflats out for normal tyres, am on the M-Sport 19" rims. Currently the tyre sizes are 225/35/19 255/30/19 What are the simple steps I need to do to change over to normal tyres. Three places I've called have said I can't do it, I know otherwise I just want a concise listing of what needs to be done. Ta Going into BMW Battersea on Monday hopefully they'll sort all the other problems !
	Appreciate 0 Tweet Quote

09-24-2008, 01:31 PM	#2
MattOz Lieutenant Colonel 345 Rep 1,830 Posts Drives: Alpina G21 D3S Join Date: Apr 2006 Location: Midlands iTrader: (1) Garage List 2011 E90 M3 [0.00]	Normal tyres will fit onto the alloys. No problem. However, if you're running the lovely looking 225M alloys, just make sure that the reason for the pressure loss is not hairline cracks in the alloy wheel itself. There have been a large number of 225M alloys cracking under stress from stiff sidewall RFT's and potholes etc. I think there was a thread on it somewhere and a formal response from BMW. http://www.e90post.com/forums/showthread.php?t=170979 No point changing your tyres if it's the alloys at fault. Cheers Matt Last edited by MattOz; 09-24-2008 at 01:33 PM.. Reason: Added link
	Appreciate 0 Quote

09-24-2008, 01:44 PM	#3
sheps Colonel 81 Rep 2,396 Posts Drives: C63 AMG Join Date: Feb 2007 Location: Cambs, UK iTrader: (2)	I have exactly the same wheels as you, running exactly the same tyre sizes. I changed over to non-run flats approx 6 weeks ago and cannot recommend it enough. In terms of 'what' needs doing - nothing. The wheel design will quite happily take a run flat or non run flat tyre as it is. Any garage saying you can't do it is talking our of their hole. Those garages saying they "can't" do it actually mean they "wont". Soooo many people are migrating over to non-run flats because, whilst it is improving, the tyre technology of runflats lumbers you car with, by comparison, flat-footed handling, excessive noise, a crashy ride and not great grip. When I first had mine done, I thought there was something wrong with the car, it felt all over the place - after some driving I realised this was how the car should handle - alive, delicate, direct - the run flats make the E9X feel like a hobnail boot, when with PS2's on it it feels like a ballet shoe. Go for it - if the monkey's you've spoken to already try to dissuade you or tell you that you can't do it, you're speaking to the wrong people. Find someone decent and the enjoy your car the way it should feel. __________________ Gone but not forgotten: 325i M Sport (E92), Black Sapphire, Coral Red Dakota, 19" 225's, Seat Heating, 6FL and de-badge Replaced by 6.2 litres of AMG powered C class.
	Appreciate 0 Quote

09-24-2008, 01:44 PM	#4
dxb335d The Tarmac Terrorist 1038 Rep 29,344 Posts Drives: 997.2 GT3 Join Date: Mar 2007 Location: ''Fandango Towers'' iTrader: (3) Garage List 2010 Porsche 997.2 GT3 [9.50] 2003 BMW E46 M3 [6.00] 2007 BMW E92 335D [5.50]	Are you a drug dealer ganjaman? __________________ 997.2 GT3
	Appreciate 0 Quote

09-24-2008, 06:56 PM	#8
GanjamanUSS Banned 9 Rep 131 Posts Drives: E90 Join Date: Sep 2008 Location: Manchester iTrader: (0)	LOL I don't sell or do drugs ! The name is an old one that just kinda stuck ! Will add it to the list when BMW Battersea have a lookie on Monday with regards to the alloys can just join the list ! DRUGS ARE BAD anyway lol yeah
	Appreciate 0 Quote

09-24-2008, 09:14 PM	#10
GanjamanUSS Banned 9 Rep 131 Posts Drives: E90 Join Date: Sep 2008 Location: Manchester iTrader: (0)	cool mate, PM Sent, its booked in for monday at 9am thats gonna be a laugh getting there at that time on a monday, can't remember the last time I woke up that early on a weekday ! lol
	Appreciate 0 Quote

09-25-2008, 04:00 AM	#11
MOB Major 61 Rep 1,413 Posts Drives: Alpine White M2 LCI Join Date: Dec 2007 Location: Northants UK iTrader: (4)	You just need to find a tyre fitter willing to do it - I had 2 say no to me. Ride quality and tramlining improve a lot, but handling sharpness reduce a tad - noticeable but not an issue for me. __________________
	Appreciate 0 Quote

09-25-2008, 04:26 AM	#12
spandeli First Lieutenant 18 Rep 370 Posts Drives: BMW E92 320D M Sport Auto Join Date: Aug 2008 Location: Cyprus iTrader: (0)	so, let me ask you something, that might have been answered before, so do not flame me pls what do you do once you have changed to non-runflats, and you do have a flat tire?
	Appreciate 0 Quote

09-25-2008, 04:58 AM	#13
MOB Major 61 Rep 1,413 Posts Drives: Alpine White M2 LCI Join Date: Dec 2007 Location: Northants UK iTrader: (4)	Either use a can of tyre weld goo that you have remembered to put in the boot, or call the AA __________________
	Appreciate 0 Quote

09-25-2008, 05:39 AM	#14
dazzapb Brigadier General 1065 Rep 3,170 Posts Drives: 2019 X3M Comp Join Date: Feb 2006 Location: SW London iTrader: (0)	yep I bought two cans of holts tyre weld just to be safe in Halfords (sale on now) it has a compressor in it too so it will inflate the tyre and goo is transferred
	Appreciate 0 Quote