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05-26-2011, 10:46 AM | #45 | |
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05-28-2011, 10:20 AM | #46 | |
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Gill, can you comment on this?
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I know Gill says there will be no rubs. But I read above in this thread that rub might be possible under some circumstances. I have no plans to roll the fenders. Comments and suggestions appreciated. |
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05-28-2011, 02:02 PM | #47 |
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You can not go wrong with any Michelins. They are such great tires. I was out driving today and wondering how much I don't miss my runflats. The Michelins are truely a great tire. Even if you get PSS - you will be happy. I would not loose too much sleep over going with the larger tire size.
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05-28-2011, 11:15 PM | #48 | |
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05-29-2011, 04:58 AM | #49 |
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I have driven on the Bridgestone Potenza RFT on a circuit at the BWM driver training. When pushed to the limits, it seems to me the stiff sidewalls of the RFT doesn't offer any benefit. IMO, you will get better overall performance with conventional tire with the appropriate inflation pressure (more than the spec on the compliance plate).
Personally I dislike the steering feel of run-flats for road usage because there is an awful lot of tramlining. Getting rid of run-flats is the best thing you can do for your car. Especially the Bridgestone Potenza RFT II is one of the harshest, more noisy tires on the planet. |
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05-29-2011, 06:59 AM | #50 | |
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If you get a drop and have a passenger in the car, you may rub on certain dips. I have 225 and 255 dunlop dirrezas on stock 261's and i rub on right rear when i go over dips and bumps i normally never rubbed on before, as long as i have a heavy passenger with me.
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05-29-2011, 01:10 PM | #51 | |
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Yes, I am very happy with my non-RFT Michelin's. I gave up a tad bit of steering response for a MUCH better ride quality. And the dry and wet grip is way better now than with my OE Dunlap RFT's. What you will notice most is the car doesn't hop & skip around (over bumps) as much as it did with the RFT's. Even going over little dips on a flat road with RFT the car's tires would hop or feel like they would hang up in the air... now the car's suspension feels like it is working more in harmony - togther. I would not go back to RFT's. I do think I will go with the Performance suspension and probaboy the M3 control arms. But that is down the road some. Dackel |
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05-29-2011, 08:00 PM | #52 |
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i've just installed 225/255 Z1's, went for drive on the weekend, no rubbing.
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05-31-2011, 09:01 PM | #53 |
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I have to be honest. Of course this is my opinion. I just bought the 225 / 255 setup in Conti extreme DW's. The tires are great and the looks are fine also. But, I do notice a loss in tight handling as opposed to the OEM Bridgestones.
When these wear out I will be going back to the original setup. I do miss the razor sharp handling they brought. The Bridgestones also look great and look wider on the car. The 225 / 255's are taller tires and dont look wider to me. maybe I'm wrong here, but the footprint does look narrower. |
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06-01-2011, 06:54 AM | #54 | |
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From a track perspective, any runflat tire is numb compared with a traditional tire...the crisp turn in you think you had was actually numb.
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06-01-2011, 11:09 AM | #55 |
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Sorry dude, as I said "this is my opinion" and my dollars at work here. And your thoughts are completely wrong. The OEM bridgestones, do look much better and handle better than these Conti's. The softer sidewalls are very apparent on an off ramp. The car was tighter with the OEM run-flats. I have been driving Hi performance autos for more than 20 years. I don't agree at all with your interpretation on what I was feeling from the tire... LOL
Last edited by PA135i; 06-01-2011 at 11:39 AM.. |
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06-01-2011, 04:07 PM | #57 |
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You know this is why I decided to go with Michelin's... bc although the Conti extreme DW's did score well on TireRack's website... some of the feed back here was less than spectacular. I seem to remember a few guys here saying how the streering response was not that great and how the sidewalls were soft. This is why I went with the PS3's - even though they were (more)$$$.
I respect "kja325ci" opinion. I am curious though... Do you have Conti extreme DW's (summers) or DWS (all seasons)? Dackel |
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06-01-2011, 05:00 PM | #58 | ||
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I too can respect your opinion, but it's yours, and not based on anything more than your butt. I'd rather trust mine. Quote:
His original post mentions that they're the DW model.
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06-01-2011, 05:18 PM | #59 | |
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you may be right, but unfortunately your resume doesnt mean much on the webernet. |
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06-01-2011, 05:53 PM | #60 |
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06-01-2011, 05:56 PM | #61 |
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06-01-2011, 06:43 PM | #62 |
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Could it be the wider 225's up front that causes a loss of steering sharpness?
My thoughts are that the wider tyres might protrude out past the rim, therefore allowing more room for sidewall flex? I'll be sticking to the stock sizes when i finally go non-RFT.
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06-01-2011, 06:46 PM | #63 |
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I think that people who criticise the steering response of non-RFT probably don't have enough air pressure in them. Try around 36 PSI, then see if the situation improves.
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06-01-2011, 07:12 PM | #64 |
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I have a 235/255 setup on the BMW Performance Suspension, no rubbing anywhere. Even with 4 200lb+ guys in the car.
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08-05-2011, 06:00 PM | #65 |
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Hello, I've been enjoying reading this thread. I'm not understanding why a 225/255 with non-RFTs would result in a slight increase in height over the stock RFTs. Would someone explain this?
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08-05-2011, 07:19 PM | #66 | |
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Using info I found on Tire Rack (Pirelli P Zero specs) Stock rear tire size 245-35-18 => 24.5" overall height Using the larger 255, same 35 aspect ratio 255-35-18 => 25.2" overall height
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