02-10-2013, 11:19 AM | #23 |
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Review from Australia's Wheels Magazine:
328i vs C250 vs A4 comparison
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02-10-2013, 04:19 PM | #24 | |
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Without going too far off topic, I went straight to BMW Technical and Bridgestone, (as I said BMW backed away), but I managed to get a Senior Bridgestone Field Engineer up here for a morning, and we went out in my car for him to see for himself what we were dealing with, when road quality was not of typical 'test' standard. It was clear I was pushing the working envelope up here and the suspension was not coping with the RFTs. Obviously he had much more to say and went off to investigate the issues further. Hence why I went for Koni FSD dampers to widen that restricted envelope. Was still not enough for the driving quality I was after. Now we have active damping systems which widen that envelope even more, when conditions start pushing the boundaries. HighlandPete |
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02-11-2013, 01:25 PM | #25 | |
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02-11-2013, 01:30 PM | #26 |
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I would love to drive an F30 with M Sport Adaptive Suspension shod without Run Flat Tyres.
That could possibly be an even more fab car? Yes? No?
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02-11-2013, 01:44 PM | #27 |
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I think it will depend how much the car has been set up for the RFT but all Alpina cars are far more compliant and they aint got RFT but do have different suspension
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02-11-2013, 03:55 PM | #28 | |
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You likely gather from my comments, I've been on this RFT issue for quite a few years now, hence why getting into a 5-series required Adaptive Drive as the first key option, and deal breaker if not fitted. I'm running 18" RFTs on my summer set and 17" RFTs on the winter set. I'm actually pleased with both, they both work with a very similar feel, even the winter RFTs in cold temperatures, and give very little negative feedback. We have moved on a great deal, so any change would have to be carefully thought out. I sense you'd need a decent UHP tyre with pretty good lateral performance, to keep the good characteristics, not giving much away in the handling department, but a little more tyre flex for comfort. I'm happy to keep with RFTs on my car, but do wonder how much smoother and refined the ride would be, fitted with non run-flats. I'm sure it will be more marked on cars not fitted with adaptive suspension, particularly if running passive M-sport suspension. HighlandPete |
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02-11-2013, 04:12 PM | #29 |
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I wonder about the same thing. I tried really hard to get BMW to supply my car on non RFTs, but they said they weren't allowed - something to do with deviating from standard spec.
I'd like to see what the car feels like with Michelin Pilot Super Sports on. Was thinking of splashing out in the spring. Does anyone know if non RFTs will go onto the standard rims? My summer rims are the 19" 403s. |
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02-11-2013, 04:31 PM | #30 | |
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