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07-10-2018, 02:08 PM | #45 | |
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07-10-2018, 02:14 PM | #46 |
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I would say #1 reason it hasn't sold is because its had 4 owners!
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07-10-2018, 02:41 PM | #47 | |
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07-10-2018, 02:43 PM | #48 | ||
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07-10-2018, 02:45 PM | #49 |
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just hit 30k miles super clean pm me if you would like info I picked up a M5 and don't drive it anymore I was going to give it to my son for when he turned 16 but I just thought about it and said the hell with that he will tear this car up. Honda Accord for him
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07-10-2018, 02:54 PM | #50 |
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Great call! The 15 year old me says gimme for my 16th birthday, but the 30 year old me says put it in a time capsule for college graduation (with a non-art degree haha). Maybe give him a nice chassis that starts with low power, like a used 86/BRZ/FR-S (if he's an auto enthusiast).
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07-10-2018, 02:59 PM | #51 | |
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07-10-2018, 04:22 PM | #52 | |
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I would agree that standard EDC suspension in sport setting is a mess, I never use it. Normal is perfect for fast road driving, supple and deals well with bumps. It's not great at very fast transitions but that is not helped by the cars weight. The drop would be nice cosmetically, but you could just get DINAN stage 1 and have basically the same effect. Recently I have ridden in a number of non performance cars that felt a lot choppier and no where near as well dampened. I rode in a Mazda 6 with 30k miles on it and it felt awful, same with and f10 5 series I rode in which felt very over sprung (this affects a lot of modern cars looking to be 'sporty') despite having huge sidewall tires. Ultimately the stock M3 suspension is fantastic, compromised if you want more extreme but for a huge spectrum of driving types its very impressive. Every time I cruise in comfort mode i'm reminded at just how civil it is when you want it to be. |
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07-10-2018, 05:03 PM | #53 | |
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An Ohlins RT, for example, is really good over the sharp/quick transitions but much too 'firm' for normal driving. Can't have your cake with suspensions, I'm afraid (and I've used a lot of different setups). Interesting note about the steering response with 359s... is the only variable the wheels (meaning identical tires/sizes)? |
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07-10-2018, 06:21 PM | #54 | |
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07-10-2018, 07:07 PM | #55 |
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Agree with the first comment - Sunroof.
For me, I love sunroofs. My wife has a Q5 with a huge sunroof and I make sure it's all the way open. BUT when it comes to an e92 - I have absolutely less than zero interest in a car with a sunroof. Gotta have that CF roof - that look really MAKES the car in my mind. Sure, you can get away with it on a black car but that's something I didn't want to compromise on. |
07-10-2018, 09:08 PM | #56 | |
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07-10-2018, 09:14 PM | #57 | |
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07-10-2018, 09:20 PM | #58 | |
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You don't have to take my word for it. BMW was the one who engineered the ZCP, and stated that the contact area is larger with the 359 wheels: https://www.bmwblog.com/2010/05/13/b...e-even-faster/ "Wänninger: Yes, the car is measurably faster. In addition to the special EDC set-up, this is also due to the increased width of the rims included in the Competition Package, which permit a larger a larger contact area of the tyres in conjunction with optimum, constant pressure distribution."
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07-10-2018, 09:47 PM | #59 | |
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As for wider wheels having more grip, both the ZCP and non ZCP have exactly the same tires as standard.. As for ZCP being measurably faster, is there any data to support that? I've never seen any. Happy to be proved wrong. |
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07-10-2018, 10:15 PM | #60 | ||
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“Wänninger: It is mainly the rebound which is adjusted by controlling the damper piston valve.” Quote:
I don’t have data but I have to assume BMW does since their engineer is making the claim.
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07-11-2018, 05:51 AM | #61 |
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The contact patch area is determined by the vehicle weight, carcass stiffness and, most importantly, the inflation pressure. Increasing wheel width, while holding the other variables constant, increases the measurement of section width of the tire/wheel combo -- rule of thumb is for every increase of 1" in wheel width, you get ~0.4" in section width increase. They also increase the effective spring rate of the tire sidewall. This results in a steeper slope to the tractive force vs slip angle curve -- the tire will feel more responsive, generate slightly higher force output at any given slip angle.
As to maximum tire grip at steady state conditions, the effect is marginal and likely within the bounds of repeatability for a minor 0.5" change in wheel width. However, if you test from the minimum recommended wheel width to the maximum one (in the TRA guidelines), you definitely will see a measurable difference. It all comes down to how the contact patch is managed and load distributed across it at maximum grip. All other things equal, a wider wheel *usually* results in better contact patch "shape" under maximum load. There are caveats to this blanket statement however; hence, blanket marketing material statements are not hard facts -- never have been, and never will be. Funny this topic is being discussed as my EC-7s are arriving today. I'm not holding the tire variable constant though since I'm changing to PS4S from 5 year old PSS. Tire size is constant however: 255/35-19 and 275/35-19; wheel sizes are changing from 8.5/9.5 to 9.5/10.5.
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07-11-2018, 06:17 AM | #62 | |
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OP: I think it depends, if I were buying a low mileage car who’s suspension I wasn’t planning on touching, I would want to do a comp package. On the other hand if I have plans to modify or if the car has some mileage on it or is a clean pre-facelift, I would not care. |
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07-11-2018, 07:02 AM | #63 | |
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07-11-2018, 08:53 AM | #64 | |
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However! It was a rare day yesterday in San Diego - it was warm but totally overcast (my absolute favorite weather) and perfect for sunroof-open driving. Had the roof open for hours later in the day as the wife and I dropped of the 46M for rod bearings (Kaiv). But yeah, 99.9% of the time it's closed. If the sun is shining (98% of the time in SD) I want the roof shut, no question. |
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07-11-2018, 10:06 AM | #65 |
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I have a sunroof in my 08 E90M3. I have opened it only a few times in 8 years. I bought used and the car came with it. You can retrofit a carbon roof. It’s a bit of work but can be done if it is important to you. I think Lang Racing has done some. Get rid of the sunroof, save some weight. Not high on my priority list but if I ever run out of things to do and have some money burning a hole in my pocket, it is an option.
Light and wider wheels are easy — been running Apex ARC8 in 18x9.5/10.5 for 8 years. |
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07-11-2018, 10:14 AM | #66 |
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I get that the look of the CF roof is certainly awesome and does complete the car, but I do actually use my sunroof quite a bit. I open it on nice days pretty frequently, and even when it's not open, I almost always leave it tilted to let air flow through. With how often I leave the gym sweaty, I really need to let air flow through, LOL.
As for the weight, we're really only talking about 11 lbs, which is not going to make or break too many folks. Yes, I realize it's up high where you don't want it, but it's not like it's 50 lbs. If I was racing the car (not tracking, since there's little to be gained other than bragging rights), I would have made CF roof mandatory, but otherwise I like having a sunroof. To each his own.
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