Replacing run flats

Richardoe92 · 04-06-2013, 04:22 AM

Hello guys not strictly sure of whether I'm posting in the right place, but here goes.
I have a 320d coupe with 19" 225m wheels.
If I swap out the rf tyres for non run flats, what load ratings should I look for?
I understand the tyre sizes are the same, however, I have had contradictory advice on load ratings, even to the point of being told not to do it (by a very well known online tyre dealer), also, if there are any other potential "issues" I would be grateful if you could advise.

Regards,

Richard.

m1bjr · 04-06-2013, 04:32 AM

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Igor · 04-06-2013, 04:33 AM

I think load index its 88 (same like rf).There is no potentail issues.

Hotcoupe · 04-06-2013, 05:46 AM

Quote:

Originally Posted by Richardoe92

even to the point of being told not to do it (by a very well known online tyre dealer)

Could only be that well known idiot who picks up the phone @ Camskill,it's time they put him out in the yard with a broom!

Igor · 04-06-2013, 06:27 AM

Quote:

Originally Posted by Hotcoupe

Could only be that well known idiot who picks up the phone @ Camskill,it's time they put him out in the yard with a broom!

dopper99 · 04-06-2013, 01:48 PM

With regards load ratings, I'd read to replace with XL tyres so that's what I did a couple of weeks ago and had no problems whatsoever.
Before, the run flats on my 18s were 88 and 90. I changed to Good Year asymmetric 2 non run flat with 92 and 94. The reason being is is didn't what to lose the turn-in so went for the stiffer side wall higher load tyre. Result is no difference at all with the steering - just a better all round drive. Although no idea what it would be like fitting non run flats with lower load ratings.

Richardoe92 · 04-07-2013, 06:53 AM

Thanks for your replies lads, after a quick search /look around on line it appears that using XL tyres with = or higher load ratings will do the trick.
Now just gotta save the pennies!

Richardoe92 · 04-07-2013, 06:54 AM

Quote:

Originally Posted by dopper99

With regards load ratings, I'd read to replace with XL tyres so that's what I did a couple of weeks ago and had no problems whatsoever.
Before, the run flats on my 18s were 88 and 90. I changed to Good Year asymmetric 2 non run flat with 92 and 94. The reason being is is didn't what to lose the turn-in so went for the stiffer side wall higher load tyre. Result is no difference at all with the steering - just a better all round drive. Although no idea what it would be like fitting non run flats with lower load ratings.

Cheers mate, you confirm that the way I had read it was correct.

dopper99 · 04-07-2013, 03:55 PM

The slightly higher load rating bears no resemblance to the god-awful rock hard side walls of the run flats so don't be concerned you will end up with as stiff side walls as run flats. Not at all. Even with the slightly higher load rating the ride is MUCH more comfortable and the annoying skipping you get when going over pot holes is gone.

Also, you can actually get steering feel back again, just like every other car that does not have run flats fitted.

You can see why BMW dont want to ruin the handling experience of the M3, M5 etc... by fitting non run flats as standard. By doing this, they are already half way to making a great handling car.

04-06-2013, 04:22 AM	#1
Richardoe92 Enlisted Member 2 Rep 34 Posts Drives: 320 d M Sport coupe Join Date: Dec 2012 Location: Yorkshire iTrader: (0)	Replacing run flats Hello guys not strictly sure of whether I'm posting in the right place, but here goes. I have a 320d coupe with 19" 225m wheels. If I swap out the rf tyres for non run flats, what load ratings should I look for? I understand the tyre sizes are the same, however, I have had contradictory advice on load ratings, even to the point of being told not to do it (by a very well known online tyre dealer), also, if there are any other potential "issues" I would be grateful if you could advise. Regards, Richard.
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04-06-2013, 04:32 AM	#2
m1bjr LSD - No, you're not seeing things 72 Rep 3,302 Posts Drives: Baby F36 Gran Coupe Join Date: Mar 2010 Location: Plymouth UK iTrader: (4)	Search. Millions of threads on here. You just have to type and read __________________
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04-06-2013, 04:33 AM	#3
Igor New Member 0 Rep 7 Posts Drives: BMW e46 Join Date: Apr 2013 Location: Epsom iTrader: (0)	I think load index its 88 (same like rf).There is no potentail issues.
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04-06-2013, 01:48 PM	#6
dopper99 Lieutenant General 3533 Rep 11,292 Posts Drives: Golf R Mk8 Join Date: Jun 2011 Location: UK iTrader: (1)	With regards load ratings, I'd read to replace with XL tyres so that's what I did a couple of weeks ago and had no problems whatsoever. Before, the run flats on my 18s were 88 and 90. I changed to Good Year asymmetric 2 non run flat with 92 and 94. The reason being is is didn't what to lose the turn-in so went for the stiffer side wall higher load tyre. Result is no difference at all with the steering - just a better all round drive. Although no idea what it would be like fitting non run flats with lower load ratings.
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04-07-2013, 06:53 AM	#7
Richardoe92 Enlisted Member 2 Rep 34 Posts Drives: 320 d M Sport coupe Join Date: Dec 2012 Location: Yorkshire iTrader: (0)	Thanks for your replies lads, after a quick search /look around on line it appears that using XL tyres with = or higher load ratings will do the trick. Now just gotta save the pennies!
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04-07-2013, 03:55 PM	#9
dopper99 Lieutenant General 3533 Rep 11,292 Posts Drives: Golf R Mk8 Join Date: Jun 2011 Location: UK iTrader: (1)	The slightly higher load rating bears no resemblance to the god-awful rock hard side walls of the run flats so don't be concerned you will end up with as stiff side walls as run flats. Not at all. Even with the slightly higher load rating the ride is MUCH more comfortable and the annoying skipping you get when going over pot holes is gone. Also, you can actually get steering feel back again, just like every other car that does not have run flats fitted. You can see why BMW dont want to ruin the handling experience of the M3, M5 etc... by fitting non run flats as standard. By doing this, they are already half way to making a great handling car.
	Appreciate 0 Quote