Non runflats and the implications
Discussion
Hello again!
Has anyone fitted non runflat replacement tyres to their BM and what have been the results.
I ask because I am growing tired (tyred
) of the perpetual jiggling of those rock hard run flats, not to mention the exhorbitant cost of replacements!
As the temperatures have started dropping, they take an age to warm up in a morning and offer any meaningful grip or indeed actually return to circular in shape after sitting all night!
I have recently read some doom ridden emotive clap trap about the dire consequences of fitting 'normal' tyres to cars designed for RF tyres, but fail to see how fitting a softer compound, lighter performance tyre from a quality manufacturer can be anything other than an improvement on these cast iron RF ones?!
Tatty bye
Has anyone fitted non runflat replacement tyres to their BM and what have been the results.
I ask because I am growing tired (tyred
) of the perpetual jiggling of those rock hard run flats, not to mention the exhorbitant cost of replacements! As the temperatures have started dropping, they take an age to warm up in a morning and offer any meaningful grip or indeed actually return to circular in shape after sitting all night!
I have recently read some doom ridden emotive clap trap about the dire consequences of fitting 'normal' tyres to cars designed for RF tyres, but fail to see how fitting a softer compound, lighter performance tyre from a quality manufacturer can be anything other than an improvement on these cast iron RF ones?!
Tatty bye
Heard of one guy who fitted them to a 535d sport... when I spoke to him about it (as was considering a 535d at same timee) he said it improved the handling and ride no end.
Just carry a can of that tyre foam stuff to re-inflate if you have a puncture, though it can mean tyres are unrepaiarable if you use it.
Just carry a can of that tyre foam stuff to re-inflate if you have a puncture, though it can mean tyres are unrepaiarable if you use it.
) and having driven home at a steady 50mph'ish, I crawled to the tyre place and had a new one fitted the next day for £170 + VAT. The tyre pressure monitor system on BM's works by comparing the rotating speed of each wheel, and assuming that a low speed is a result of a puncture. It runs from the ABS system. It has nothing to do with the wheel or tyre and fitting proper tyres will not cause the world to explode
There is so much rubbish spouted from tyre places who either:
1. want to sell you a more expensive tyre
or
b) are worried about the legal implications of repairing a run flat, because they don't know how long it's been run on the sidewall.
0r
iii) just don't know the facts
Look at it this way:
1. The M3 and M5 are not fitted with run flats
2. You can spec a new MINI with normal tyres
3. BMW sell a mobility kit (tyre gunk + compressor) for cars with proper tyres.
The best modification I have EVER made to any car was throwing the runflats away.
There is so much rubbish spouted from tyre places who either:
1. want to sell you a more expensive tyre
or
b) are worried about the legal implications of repairing a run flat, because they don't know how long it's been run on the sidewall.
0r
iii) just don't know the facts
Look at it this way:
1. The M3 and M5 are not fitted with run flats
2. You can spec a new MINI with normal tyres
3. BMW sell a mobility kit (tyre gunk + compressor) for cars with proper tyres.
The best modification I have EVER made to any car was throwing the runflats away.
Raify said:
The tyre pressure monitor system on BM's works by comparing the rotating speed of each wheel, and assuming that a low speed is a result of a puncture. It runs from the ABS system. It has nothing to do with the wheel or tyre and fitting proper tyres will not cause the world to explode
I think he's getting at the fact that it's hard to tell with a casual glance if you've got a flat tyre with runflats. Which is why they have the Tyre Pressure Monitor System.Andrew D said:
Raify said:
The tyre pressure monitor system on BM's works by comparing the rotating speed of each wheel, and assuming that a low speed is a result of a puncture. It runs from the ABS system. It has nothing to do with the wheel or tyre and fitting proper tyres will not cause the world to explode
I think he's getting at the fact that it's hard to tell with a casual glance if you've got a flat tyre with runflats. Which is why they have the Tyre Pressure Monitor System.I see. The problem is, you get people with "a little knowledge" in tyre centres refusing to put proper tyres on MINI's because "it will mess with the puncture sensors, Guv"
MD San said:
Recently changed the RFs on my Z4 for non RF Michelin Pilot Sports and the difference is amazing. Huge improvements in ride and handling. Just do it.
Good decision!
Excellent choice of tyre!
Those Michelins aren't cheap but as you say, they transform the ride and handling of a car that's been on runflats. Staggeringly cost-effective upgrade.
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