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Can I run runflats and non-runflats together???

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Old 09-04-2009, 04:08 AM
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Originally Posted by spiros' post='997085' date='Sep 3 2009, 12:35 PM
I personally don't see any problem with this. Actually a member here - i think is called russian? - done this and he's very happy with the results
My back tyres are already on normal tyres and fronts will be as soon as the tread runs out. The ride is also softer with Non- Run flats tyres. Plus they are cheaper, 2 new backs for mine cost me ?220 fitted against ?240 each for Run Flats. Just make sure you have tyre weld in case of a flat tyre.
Old 09-05-2009, 02:22 AM
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Originally Posted by luigi524td' post='997599' date='Sep 3 2009, 08:29 PM
You're mixing tires (even front to rear) with very different handling characteristics -- IMHO the result under normal driving conditions isn't likely to be noticeable ... BUT, I suspect that spirited driving and emergency handling will be compromised.

I wouldn't recommend it!
Just curious.. are you an expert in tires to make such a statement?
Or this is just your opinion only?
Old 09-05-2009, 09:17 AM
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Good gawd people, his car isn't going to explode or fall off the road if he mixes tires for a couple of months of regular driving. He's not going to the track or even on a hard run. Obviously, it's not ideal, it's a compromise.

OP, If you need more similar advice, just visit overlycautiousninnies.com.

It's fine for a short time. Just get a feel for it before drifting around the mall parking lot or running through crowded crosswalks full of children and the elderly.
Old 09-05-2009, 09:35 AM
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Originally Posted by luigi524td' post='997599' date='Sep 3 2009, 07:29 PM
You're mixing tires (even front to rear) with very different handling characteristics -- IMHO the result under normal driving conditions isn't likely to be noticeable ... BUT, I suspect that spirited driving and emergency handling will be compromised.

I wouldn't recommend it!
x2 That is like Putting 2 Different Brake Pads on the Ride. Ceramics and Semi-Metallic is a No No!
Old 09-05-2009, 09:39 AM
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Originally Posted by CWS530' post='999419' date='Sep 5 2009, 10:17 AM
Good gawd people, his car isn't going to explode or fall off the road if he mixes tires for a couple of months of regular driving. He's not going to the track or even on a hard run. Obviously, it's not ideal, it's a compromise.

OP, If you need more similar advice, just visit overlycautiousninnies.com.

It's fine for a short time. Just get a feel for it before drifting around the mall parking lot or running through crowded crosswalks full of children and the elderly.
listen to this man he is wise..i havent been on overycautios since the last time i stubbed my toe..
Old 09-08-2009, 09:08 AM
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Do you have a spare tire/ doughnut in your trunk?

BMW USA doesn't include them on cars equipped with runflats.

I switched away from runflats before taking delivery of mine. I had to buy a spare for the trunk or run the risk of being without.

I still have two dunlop 18" runflats off taken before devliery if anyone is interested, see below
Old 09-08-2009, 09:25 AM
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Originally Posted by Pauken4' post='1001779' date='Sep 8 2009, 01:08 PM
Do you have a spare tire/ doughnut in your trunk?

BMW USA doesn't include them on cars equipped with runflats.

I switched away from runflats before taking delivery of mine. I had to buy a spare for the trunk or run the risk of being without.

I still have two dunlop 18" runflats off taken before devliery if anyone is interested, see below
On your year maybe, but my vehicle has a donut. So, a blanket statement, "BMW USA doesn't include them on cars with runflats", is untrue.


Also, to the OP:
I believe it is not at all recommended to mix r/fs and non-r/fs even if pairs of same are on different axles
You have a "new" vehicle so just keep it up to spec!
Old 09-08-2009, 09:28 AM
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Originally Posted by Kzang' post='999197' date='Sep 5 2009, 06:22 AM
Just curious.. are you an expert in tires to make such a statement?
Or this is just your opinion only?
We all only have our opinions. Different tires handle wet weather, dry road break away thresh holds, operating temperature, weight load, and braking differently. The cars suspension is setup with a balance of these three things so with different tires or different types of tires you would get different performance envelopes where one tire type with fail before another. This maybe more theory in a science experiment as the differences maybe imperceptible at normal speeds on the street. BUT... someone asked the question.
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