E92 Run Flat Inner Wearing Solved!!!!
Discussion
I have solved the issue with the runflats on my E93 330d on 19inch M Rims.
I have had the car since Feb 09 from new and have had four sets of runflats on it, since I have covered 50K.
My last set has last me 24k with the whole tyre area running even. This is because I have been running them at 3.4 bar or 49 PSI (max tyre pressure with car fully loaded with 4 persons, as shown on the sticker in the door seal). On the other 2 sets the inner edges keep disappering when the rest of the tread area was good.
By inflating the tyre fully this increases the centre to rise and equals out the pressure arcoss the whole tyre. Been speaking to BMW about the same problem and they have recommended to run the tyre at full load. The only things the ride is even harder now.
I have had the car since Feb 09 from new and have had four sets of runflats on it, since I have covered 50K.
My last set has last me 24k with the whole tyre area running even. This is because I have been running them at 3.4 bar or 49 PSI (max tyre pressure with car fully loaded with 4 persons, as shown on the sticker in the door seal). On the other 2 sets the inner edges keep disappering when the rest of the tread area was good.
By inflating the tyre fully this increases the centre to rise and equals out the pressure arcoss the whole tyre. Been speaking to BMW about the same problem and they have recommended to run the tyre at full load. The only things the ride is even harder now.
Flippin run flats ,I will probably never buy another BMW because of them .NO why should I have all the agro of sorting out Non run flats.I was going to say if I want to upgrade to a 3 series I will see what the new 3rd gen Bridgestones are like .However at the moment my 120d tyres (16inches) cost around £100,talking to a guy at the tyre shop his 335d runflats are £300 a corner!!!!!!!!!
Ridiculous.
The best marque around totally compromised.I understand us mugs in the uk are the only drivers that has to put up with them.(The whole range not just the new normal tire options)
Ridiculous.
The best marque around totally compromised.I understand us mugs in the uk are the only drivers that has to put up with them.(The whole range not just the new normal tire options)
B3pete said:
Flippin run flats ,I will probably never buy another BMW because of them .NO why should I have all the agro of sorting out Non run flats.I was going to say if I want to upgrade to a 3 series I will see what the new 3rd gen Bridgestones are like .However at the moment my 120d tyres (16inches) cost around £100,talking to a guy at the tyre shop his 335d runflats are £300 a corner!!!!!!!!!
Ridiculous.
The best marque around totally compromised.I understand us mugs in the uk are the only drivers that has to put up with them.(The whole range not just the new normal tire options)
I know what you mean and BMW seem to not want to admit they made a mistake by using them on all their new cars.Ridiculous.
The best marque around totally compromised.I understand us mugs in the uk are the only drivers that has to put up with them.(The whole range not just the new normal tire options)
Just bought a new Z4 35sDrive and just monitoring the tyres on this car as they are on runflats.
Cheapest place to get the 19" runflats are from BMW at £250 per corner.
I was pretty slack at checking pressures and my dealer pointed out the inner wear at 18k (first service). They advised to run 0.2 bar above recommended, but also said I needed new rears.
I followed their recommendation and checked pressures every week or so, and the rears lasted another 6k miles with even wear and nothing further on the insides.
I followed their recommendation and checked pressures every week or so, and the rears lasted another 6k miles with even wear and nothing further on the insides.
kenyon said:
Thing is I have been testing the Aplina D3 2ltr twin turbo E92 and the ride and handling is excellent without running runflats. BMW have got it wrong this time around!!
Hello kenyon as a former owner of a B3s I am an Alpina fanatic.What do you think of the car,lighter than the 330d and can be hustled round a lot better.
Only 2 things that are putting me off. Quite poverty spec ie manual air con(did you try it, was it ok? i forgot to try it )and of course 2 year warranty .As for the ride that is not down to just having non runflats they change a lot of items to give it that magic carpet ride.
Needed new runflats last week after masses of research on t'web went for michelins over my bridgestones(looking for a bit of comfort with all the miles I do) Anyway bearing in mind that the car is rock solid the 2ltr diesel for what it is ,is a peach fast enough and in auto guise economical .Great for parking ,on the street multis,sainsburys etc.
Frustratingly even with the michelins I reckon Fred Flinstone probably had a more comfortable ride.
Edited by B3pete on Sunday 13th December 15:15
Here's another angle on tyre wear, pardon the pun. I've just switched from Bridgestone runflats to non-RFTs on my E92. Blackboots in Chesham checked my geometry first on their Hawkeye setup. They were aware many owners have had the same problems as you report, which they reckon is due to the "aggressive" camber setting BMW specifies. So Blackboots are setting up current model 3-series at the low end of the recommended range, i.e. less negative camber. I also tend to run at the full-load pressures, and the car was already showing negative camber at the low end of the target range, so it's hard to say whether one or both of these factors account for the fact my tyres had worn evenly.
kenyon said:
I have solved the issue with the runflats on my E93 330d on 19inch M Rims.
I have had the car since Feb 09 from new and have had four sets of runflats on it, since I have covered 50K.
My last set has last me 24k with the whole tyre area running even. This is because I have been running them at 3.4 bar or 49 PSI (max tyre pressure with car fully loaded with 4 persons, as shown on the sticker in the door seal). On the other 2 sets the inner edges keep disappering when the rest of the tread area was good.
By inflating the tyre fully this increases the centre to rise and equals out the pressure arcoss the whole tyre. Been speaking to BMW about the same problem and they have recommended to run the tyre at full load. The only things the ride is even harder now.
There comes a point when wear issues are overridden by safety I would think that your contact patches are tiny compared to a properly inflated tyre at that sort of pressure , one bump on a grasy bend and you're off , I found my 17" runflats too skittish but maybe your roads are better than in the fensI have had the car since Feb 09 from new and have had four sets of runflats on it, since I have covered 50K.
My last set has last me 24k with the whole tyre area running even. This is because I have been running them at 3.4 bar or 49 PSI (max tyre pressure with car fully loaded with 4 persons, as shown on the sticker in the door seal). On the other 2 sets the inner edges keep disappering when the rest of the tread area was good.
By inflating the tyre fully this increases the centre to rise and equals out the pressure arcoss the whole tyre. Been speaking to BMW about the same problem and they have recommended to run the tyre at full load. The only things the ride is even harder now.
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