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Run flat tire pressure

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Old 10-02-2006, 06:27 PM
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Take a look here:
http://forums.e60.net/index.php?showtopic=4695

There are pictures that show three different versions of the b-pillar sticker. 19" specs are given on two of them, but I'm not sure the size is that same as what you're running...
Old 10-02-2006, 08:58 PM
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Originally Posted by Rudy' post='341027' date='Oct 3 2006, 10:27 AM
Take a look here:
http://forums.e60.net/index.php?showtopic=4695

There are pictures that show three different versions of the b-pillar sticker. 19" specs are given on two of them, but I'm not sure the size is that same as what you're running...
you are my life saver
thanks I know what you do now
I will put 34 front and 38 back, at the back there is always 1 and a half person sitting there.
Old 10-02-2006, 11:37 PM
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Only goes to show - I thought they were low based on profile and car weight...
Old 10-03-2006, 07:14 AM
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How about 18 inch non-runflats?
I put 32F/35R.
Old 10-03-2006, 09:31 AM
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Originally Posted by bmw545' post='341198' date='Oct 3 2006, 11:14 AM
How about 18 inch non-runflats?
I put 32F/35R.
For my 2007 550 I decided to ignore BMW suggestions for tires pressure. Their recommendations are very confusing to say the least.

For staggered 18 RFTs (550) they are:

Below 100mph
All loads - 30F/35R

Above 100mph
Light load - 29F/32R
Heavy load - 33F/38R

Yeah, right. Say I am about to get into a race with that punk in G35 coupe. What I am supposed to do? Tell him ?wait for a second I need to let some air out of my tires to go faster than 100 mph??

To be serious though, the above advice is controversial. Before BMW suggested higher pressure for higher load. Now it is the same pressure for speeds below 100mph but if you want to drive faster you should add/loose air based on load. Does not make much sense to me. Also the new numbers are much lower than 2005 545 numbers. Plus I just can't stand softer tires. With all that said I use 38F/40R.
Old 10-03-2006, 10:18 AM
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Originally Posted by SergeyM' post='341264' date='Oct 3 2006, 12:31 PM
For my 2007 550 I decided to ignore BMW suggestions for tires pressure. Their recommendations are very confusing to say the least.

For staggered 18 RFTs (550) they are:

Below 100mph
All loads - 30F/35R

Above 100mph
Light load - 29F/32R
Heavy load - 33F/38R

Yeah, right. Say I am about to get into a race with that punk in G35 coupe. What I am supposed to do? Tell him ?wait for a second I need to let some air out of my tires to go faster than 100 mph??

To be serious though, the above advice is controversial. Before BMW suggested higher pressure for higher load. Now it is the same pressure for speeds below 100mph but if you want to drive faster you should add/loose air based on load. Does not make much sense to me. Also the new numbers are much lower than 2005 545 numbers. Plus I just can't stand softer tires. With all that said I use 38F/40R.
Well.. I think there are few steps you need to do to be in Racing mode.
1. Off AC
2. Off DSC/DTC
3. D->DS if you have steptronic
4. now one more step lower tire pressure.
I don't know if your opponent will wait for you....
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