Bridgestone Potenza RE050A Run Flats
10-18-2006, 05:43 AM
#31
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My Ride: 2001 BMW 316ti, 2004 BMW 530d, 2006 BMW 530xd, 2013 BMW 320d touring, 2014 BMW 520d touring, 2016 BMW X5, 2020 BMW 320da touring, 2020 BMW 540i
Model Year: 1974
Engine: Flat six
I have it but NON RFT and they are just fine.
I'm glad i stop using the RFT tires, these ones are much more comfortable.
I'm glad i stop using the RFT tires, these ones are much more comfortable.
10-18-2006, 06:58 AM
#32
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My Ride: F11 520d white, auto, professional sat-nav with internet, variable damper control, sports steering wheel, extended lighting, retractable tow bar, wing mirrors with dimming & folding, full electric seats with memory & lumber adjustment, etc.
Wear issues on RFT tyres are affected significantly by tyre pressure according to TUV in Germany. 0.2 bar under inflation causes an increase in wear of 10%, 0.4 bar by 25% and 0.6 bar by 45%. The monitoring systems which is linked to the ABS system (passive) only gives warning if a 30% deflation is incurred and for some RFTs they will suffer damage at that level of under inflation.
All of the tests carried out by official bodies indicate that RFT tyres do save lives and do prevent drivers having to change tyres by the side of the freeway. However they fail to aknowledge that drive comfort is compromised and that tyres wear more quickly than conventional tyres.
BMW currently on the 3 & 5 series use a passive system which uses conventional wheels so non-RFT tyres can be used.
All of the tests carried out by official bodies indicate that RFT tyres do save lives and do prevent drivers having to change tyres by the side of the freeway. However they fail to aknowledge that drive comfort is compromised and that tyres wear more quickly than conventional tyres.
BMW currently on the 3 & 5 series use a passive system which uses conventional wheels so non-RFT tyres can be used.
10-18-2006, 07:46 AM
#33
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Originally Posted by Nova Invicta' post='346218' date='Oct 18 2006, 10:58 AM
BMW currently on the 3 & 5 series use a passive system which uses conventional wheels so non-RFT tyres can be used.
10-18-2006, 08:14 AM
#34
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My Ride: 07' 550i sport; Sapphire Black/Auburn; sport package; steptronic; navigation with R.T.T.I.; heads up; cold weather package; Logic-7; BMW MOST ipod kit; Motorola V3 snap-in adapter; rear heated seats and rear shades; anthracite headliner; sirrius sat. radio; M-aero kit; OEM style 166 Wheels with 245/35-19 front and 285/30-19 rear Michelin PS2s.
Originally Posted by ImolaRedM' post='345062' date='Oct 15 2006, 10:46 AM
I'm not all that impressed with my stock runflats and I'll likely switch within the next six months. Wear and noise are not issues for me. But handling in dry roads and reasonable handling in wet roads are. The RE050ARFT's are horrible in the wet roads. Even my prior 540i/6 with SP-02's did much better in the rain at any speed.
BTW, for me personally I don't like RFT technology for 1 reason and its not cost. I don't like the rougher ride. I already have a sport package and low profile tires...the run flats add insult to injury. The poor rain perfromance raises another question.....
_ DRP
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