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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > New Non RFT



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      03-20-2012, 03:36 PM   #1
mikeoz
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New Non RFT

Just changed x4 of my tyres from Bridgestone RFT to Michelin PS2..wow so much better and more grip. lots of feed back from the fronts and dsc stays off. Wish i had done it sooner..
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      03-20-2012, 03:41 PM   #2
Jules59
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yep Ive found the same; my traction control light hardly comes on now that Ive moved over to Vred Sessanta Ultracs from RFTs. I am really unimpressed with RFTs now that I have something to compare with them.
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      03-20-2012, 03:47 PM   #3
mikeoz
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yep they are rubbish and bmw know it, thats why the M cars dont use them.
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      03-20-2012, 04:46 PM   #4
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Agree with you all, just changed to Falken's and its a dramatic difference. I dont feel like im running over a boulder when hitting a cats eye and the handling is just how the car should be from the outset! Road noise is a lot quieter too. If you havent done it and are thinking of doing it, like i was for a long time, do it you wont be sorry! Just make sure you have some form of compressor and some good tyre weld in the boot!
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      03-20-2012, 05:34 PM   #5
takumichinoku
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What size are you running? As I can't seem to find PS2's in 255 30 19's without being ripped off. Can't find them on camskill.
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      03-21-2012, 03:36 AM   #6
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anyone else find the front end a little lighter/floaty on non-rfts?
i find on the dual carriageways the front doesnt seem as well weighted now. still, i can live with that in return for the dash board not cracking at every minor indentation in the great british highways....
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      03-21-2012, 03:59 AM   #7
mikeoz
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sizes

takumichinoku
Same size as you yours on the rear 255/30/19Y
Try blackcircle
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      03-21-2012, 04:00 AM   #8
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I changed to non run flat winters and have just fitted nrf conti sp5s all round and I have found the same that the steering feels lighter on both, thought it may just be the winters! Had the geometry set up properly and this helped a bit as castor was out and some of the steering weight has returned.

Ian
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      03-21-2012, 05:12 AM   #9
Guvernator
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Yes apparently you will loose a little steering feel and it may feel a bit more "flighty" when you switch to non-rfts as the sidewalls on normal tyres aren't as stiff as runflats. I feel however that is a small price to pay to not have your fillings knocked out or the car to tramline off at 90 degree angles.
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      03-21-2012, 10:43 AM   #10
dopper99
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isnt it a case of getting the tyre pressures correct with non-run flats? Would this improve the front end stability?
After all, the run flat pressure recommendations are very high and surely you wouldnt want that in the non-run flats.

in my old pre-LCI 330d I seemed to have more feel at the front end by lowering the pressures to about 5 psi less on all tyres than they supposed to be and was with standard RFT Bridgestones. My LCI seems to like them spot on the recommended pressures.
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      03-21-2012, 10:44 AM   #11
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You should notice that it doesn't understeer as easily too on damp roads.
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      03-21-2012, 12:06 PM   #12
mikeoz
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Non rft

I got Michelin PS2 which are reinforced and they dont seem to loose any feel at front end..but grip a hell of a lot better.
Light yrs better than the rft's
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      03-21-2012, 12:14 PM   #13
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I had problems finding 265/30/19 Michelin PS2s about 8 months ago and ended going for the Michelin Supersport tyres which I found were a bit better. I'm running 9.5" rears so went for the wider tyre to avoid the stretched look.

Either way, much better ride than the rock hard RFTs
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      03-21-2012, 01:12 PM   #14
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Do you think the same applies to LCI vehicles? I gather the running was much improved on RFTs?
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      03-21-2012, 05:06 PM   #15
chris_s1
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2012 E92 335d  [4.33]
Quote:
Originally Posted by fulcrum View Post
Do you think the same applies to LCI vehicles? I gather the running was much improved on RFTs?
Depends on the car and your personal tolerance for ride.

In my opinion on the cars I have driven, the LCI on 17" wheels is fine on RFTs. 18" wheels with RFTs - SE suspension is ok, Msport suspension is not great.
19" wheels and MSport suspension = forget about it, RFTs are unbearable
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      03-21-2012, 06:30 PM   #16
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Quote:
Originally Posted by chris_s1 View Post
Depends on the car and your personal tolerance for ride.

In my opinion on the cars I have driven, the LCI on 17" wheels is fine on RFTs. 18" wheels with RFTs - SE suspension is ok, Msport suspension is not great.
19" wheels and MSport suspension = forget about it, RFTs are unbearable
Mine's a LCI m-Sport on 18" - much better with non-RFTs.
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      03-21-2012, 06:43 PM   #17
dopper99
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Quote:
Originally Posted by fulcrum View Post
Do you think the same applies to LCI vehicles? I gather the running was much improved on RFTs?
I've owned both 330d pre-LCI and 330d LCI M Sport. Both had exactly the same Bridgestone run flats and there is a noticeable difference in the quality of the ride in the LCI. No loss of handling - but FAR less crashing over the bumps in the LCI. I was very impressed with the LCI when I got it - much better than I expected and worth trading up for the better ride quality. Having said that - the car still has a tendency to jump slightly as you hit a pothole when going round the bends hard. I'm not sure if this is down to the run flats or not.

In comparision, looking back my old pre-LCI 330d although a great car was verging on painful for ride quality and certainly would not want to go back to a pre-LCI M Sport.

I dont really have any issues with the run flats on my LCI, apart form the above mentioned jumping on bends. But it would be nice to see how the car performs on non run flats as people recon how good they are.

Well if they are good enough for the M3.......................
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      03-22-2012, 01:13 AM   #18
fulcrum
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Mines a LCI E92 330i Msport on 19 inch Bridgestones. While pot holes are to be avoided I don't think the ride is too bad and the handling is fine. Much better that my previous A3 Sportback S line.

But wondering if non RFTs will be better and of course cheaper.
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