05-05-2013, 01:45 AM | #221 | |
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In my test shopping I did feel that the 328i had better handling response that belied it's lower weight, meaning, the suspension is better tuned for the 328i's weight and that translates to the better handling variant. I can see and agree with the thought that BMW simply put a heavier and more powerful engine into the F30 and didn't bother to tweak the suspension for the added weight. I don't know if the springs are actually different in the 335i sport compared to the 328i sport, but it does feel as if BMW didn't get quite as right as they did on the 328i sport. My choice was based on wanting the N55 more so than the better balanced 328i. I could say that the handling difference between the 328i sport to the 335i sport is like the acceleration difference between the 335i to the 328i. It's a noticeable difference but not enough to say the 335i sport handles poorly and the 328i lacks decent power. I defend the 328i when people say it's too slow, but I also defend the 335i when people say it's a bad handler. Both claims push the argument to an extreme that's just not true. |
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05-05-2013, 01:48 AM | #222 | |
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By what measure would the 335i be a crappier car? BTW, by "crappier" it implies the other choice is also crap, just not as "crappy". You don't mean to say the F30 is crap in general, do you? |
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05-05-2013, 02:28 AM | #223 | |
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05-05-2013, 03:58 AM | #224 |
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Since the soft suspension seems to be the main issue with the 335i (apart from the steering feedback), would the M perf suspension not solve this problem for $2500 more (for people wanting to track their cars)
To me, since I use the car as a DD, the biggest fun factor is torque !! |
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05-05-2013, 05:11 AM | #225 |
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I would have found the previous generation 3 series impossible to live with. Its ride was too jiggly and the car was a harsh drive compared to the Mercedes 350 CDI AMG Sport we chose instead.
Our roads are so bad in the UK, that I longed for a comfortable ride which I get in Comfort mode. I can just about tolerate Sport mode. Every road on my daily commute is a potholed and badly resurfaced nightmare. Every day this problem multiplies. However, I fully appreciate how people feel of not feeling connected with the drive. Yes, the steering confuses weight for feel, but I can live with this, just. What I find slightly annoying is the tyre roar on coarse surfaces. I blame those runflat tyres. BMW have done themselves no favours by fitting these to their cars IMO. No car is perfect. But for me, at least, my F30 330d M Sport is all the car I want and need. It's nice to be easily satisfied.
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05-05-2013, 08:02 AM | #226 | |
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Also a note, I am now an owner of a 328 with 335 acceleration. It made the car quicker, not better. I find when I am arriving at corners and transitions at 335 speeds now, it is only highlighting more the steering, body rolls issues even more so than stock. We will see if the springs help, but I think swaybars and struts will be the only cure.
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05-05-2013, 09:26 AM | #227 | |
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It is a related discussion issue, but doesn't really deal with the topic subject directly. If needed I can copy this post and create a new thread. This prompted me to take a look at weights again. Some curious numbers. You're an active and knowledgeable member on these forums, and I'm asking for your input and insight regarding these numbers. I have my thoughts on the issue so perhaps we can add to all of our greater understanding of these cars. This may not be the thread for this, and if so we can create a new one to discuss what the varying weights of the F30 variants implies and tells us. I'm sure some of us will find it interesting, at least the car geeks will. I used BMW's numbers from the website. They don't list weights for different model configurations so the listed numbers are likely for the base models of each variant. Also, keep in mind that the 335i comes with base items that add weight compared to the base 328i, mostly the heavier sunroof. I've seen numbers showing the difference between 328i and 335i AT being more around 100-115lbs when equally optioned, and again it seems most of the weight is the sunroof and then small amounts of smaller things like the larger rotors and brake calipers, and maybe the exhaust including larger headers, etc... Here's the numbers comparison. 328i: MT - 3360lbs.- 49.4/50.6, 1660 front/1700 rear AT - 3410lbs.- 50/50, 1705 front/1705 rear +45lbs more at front. *Weight difference between AT 328i to MT is 50lbs, and 45lbs of it is at the front. 335i: MT - 3545lbs. - 51.1/48.9, 1811.5/1733.5 AT - 3555lbs. - 51.5/48.5, 1831/1724 *Only 10lbs overall difference, but weight distribution puts 19.5lbs more at the front of the AT. 328i/335i overall weight comparison: MT difference +185lbs on the 335i AT difference +145lbs " " Front/rear weights: MT- 328i: 1660/1700 MT- 335i: 1811.5/1733.5 Difference: +151.5lbs at the front, +33.5lbs at the rear. AT- 328i: 1705/1705 AT- 335i: 1831/1724 Difference: +126lbs at the front, +19lbs at the rear. Speculations/Conclusions: As we know the actual auto trans weighs a good bit more than the MT. The AT to MT weight difference within the same models seems to show that the MT in the 328i weighs a good bit less than the MT in the 335i since the weight difference is trans dependent only. There's a 10lb for the 335i, and 50lbs for the 328i, suggesting the MT's between the models show's the 335i MT to weigh 40lbs more than 328i MT. The AT is the same in either variant so the weight difference has to be mostly the trans itself along with the rear diff, and drive shaft, and other associated parts. Even though the vehicle weight of the AT 335i is only 10lbs more, the actual auto trans puts 20.5lbs more at the front of the 335i AT. Adding the AT vs MT to the 335i not only adds overall weight, but it moves MORE weight to the front than the actual additional weight of only 10lbs. The rear weight of the AT version is lighter than the MT by 8.5lbs, but as we see the weight distribution changes adding even more to the front. This suggests that there is a slightly better handling ability for the MT over the AT in the 335i. Is the drive shaft and rear diff. that much lighter for the AT compared to the MT parts? Is the drive shaft longer and heavier and/or set farther back on the MT, thus moving the weight distribution towards the rear? For the 328i, seems only the AT version has the actual 50/50 weight distribution as the MT version distributes the weight more towards the rear just slightly making the front lighter than the rear. This results in +45lbs more at the front for the AT version, suggesting the MT 328i may have a handling advantage over the AT. Whereas the AT adds 45lbs to the front of the 328i compared to the MT, in the 335i the AT adds only 19.5lbs to the front. Compared between models, the 335i MT has 151.5lbs more at the front compared to the 328i MT. The 335i AT has 126lbs more at the front compared to the 328i AT. Granted that when the cars are configured with equal items the overall weight increases are not as large, but still the MT difference between the variants has the biggest front weight difference. If BMW didn't adjust the spring rates and damping to account for that weight, then that would be a big let down. I recall reading that the spring and dampers part numbers are different though, suggesting that BMW did account for the weight differences, but in the end the overall effect indicates that perhaps BMW didn't get it right with the 335i. Best weight balance appears to be on the 328i AT, and the worst is the 335i AT. Either trans variants show that the 328i to have the better weight distribution all around. The 335i in MT or AT are front heavy in comparison. I'm also wondering if BMW set the N55 farther forward of the front axle line than in previous models, which would show up in initial steering and transient handling by having more weight in front of the axle line. That's one of the things that hurt Audi's quattro handling, most of the engine weight was forward of the front axle line, and Audi addressed it in the last A4 configuration by moving the engine back a good amount to get the majority of the weight behind the front axle, which did give a positive result in it's overall handling. Thoughts, comments, suggestions, questions? Please add. |
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05-05-2013, 09:31 AM | #228 |
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I just wanted to chime in from what I think is a fairly objective point of view, since I couldn't be bothered to defend one car over another in this teenage, internet, turd-flinging contest that makes all BMW drivers look bad... So take this a word of somebody who really doesn't care at all about having one or the other.
I dropped my 335i the other day to have the PPK installed and I was given a 328i loaner. I found the difference in feel - not just simply pure grunt and in-gear acceleration which are obvious but actual presence on the road - to be materially different. I'm not sure where people are picking up that the difference in feel and acceleration is negligible, because I found it to be huge - not Moses parting the Red Seas huge, but huge nonetheless. So, if you are a car buyer and are confused about whether or not to pony up the dough for a 335i my advice is: if you're in North America, I cannot see a reason why you would not pay the ~$5k difference and just get the 335i. If you are anywhere else with a punitive tariff and taxation regime, I would absolutely not go for the 335i; not worth the delta for the money you would likely have to pay. There you go - problem solved for all you folk. |
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05-05-2013, 09:57 AM | #229 | |
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As testers have noticed the same thing, that the 335i handles well but when the speeds increase that's when the suspension show's it's imbalance. Your observations suggests the same happens when the 328i increases power and speed. It is interesting that HR has the same springs for either variant. Perhaps they feel the weight difference is not significant enough to warrant a heavier spring for the 335i? But I don't think we all agree with that considering what most people have experienced with driving both variants. With the M Performance suspension are the springs and dampers the same for either variant? In general: To those who say that getting the M Perf solves the suspension problem with the 335i, yes I'm sure it helps, but we shouldn't have to pay that much more to get the handling a BMW 3 series should already have. The thing that sucks even more, in my point of view, is that the Msport didn't come with a better suspension tune from the factory. BMW had an opportunity to address the issues regarding the overall softness in both the 328i and 335i. The buying public now have the option of getting the base, luxury, and modern lines if they really wanted a softer BMW 3 series. But the sport and Msport should have retained the long famous and loved crisper handling, firmer control, heavier steering, and greater feel of being connected to the cars handling. There is NO reason to have softened the sport line from how it was before. People who chose and choose the sport/Msport variant are not looking for softer feel and control. Another $2500 or so might put my 335i Msport where it should have been from the factory. BMW could have easily put it in there from the factory for much less cost, and simply charged an extra $500 on top of the additional charge for Msport, then they would have had a factory car that could be used to compete against the competition in comparison reviews and probably still win all of them. Instead the top highest cost version is not beating the competition mainly due to what we the owners already know. At least we know that BMW also is reading those reviews and HOPEFULLY has put it's engineers to work on fixing the issues and not wait for the mid life crises updates. Last edited by RPM90; 05-05-2013 at 10:12 AM.. |
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05-05-2013, 10:12 AM | #230 | |
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05-05-2013, 11:41 AM | #231 | |
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If we're talking a 911, R8 or M5, then yea I think the components are going to be highly tuned to chassis under question. Otherwise, a platform like the 3 series or A4 etc will have a configuration that *has* to be as flexible and modular as possible to make it cost effective. At Ford, it costs roughly 4-6 billion dollars to produce a new car model, everything from R&D/Product development/tooling/factories etc. The people who read this forum and complain about the handling and "non-sportyness" make up .05% of the customer base, and I think BMW does a fantastic job catering to them through OEM performance parts. And for the true enthusiast, there are high performance aftermarket options that can run nearly 4k for a fully adjustable coilover setup. But as you point out with H&R, even they don't necessarily cater *exactly* to the customer. For example, there has been a lot of smoke about KW B8 S4 suspension setups, where specs are nearly .5" out of line based on mismatching springs. People are actually getting the proper setup with *avant* springs instead, which is pretty surprising.
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05-05-2013, 02:07 PM | #232 | |
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Economy of scale is what I was getting at, in that it wouldn't cost nearly as much to BMW or the customer to have tuned the suspension better. The steering issue is more complicated as it's related to the steering rack and we don't have much we can do to alter it. BMW has revised the steering rack and I think that current F30 builds have a 3rd gen steering rack, and there may be yet another rack revision for late 2013 or 2014 models. It'll be interesting to test drive those models to see if there is any better "feel" and/or feedback to the driver via the steering wheel. The questions I've posted are about the technical aspects of weight distribution and how the trans and drive line relate to weight distribution. Last edited by RPM90; 05-05-2013 at 03:14 PM.. |
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05-05-2013, 08:19 PM | #233 | |
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05-05-2013, 09:46 PM | #234 |
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I owned 06 e90 325, 08 e92 328, S5 V8, 10 e92 (N54 COBB tuned) and currently own f30 N20.
All great cars. Please stop male competitive distance urination.
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Last edited by IM2C; 06-03-2013 at 11:23 PM.. |
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05-06-2013, 10:43 AM | #235 | |
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What would be cool is for BMW to offer the M performance parts as option boxes after choosing the M-Sport trim level. If you go upgrade after taking delivery, it'll cost you ~3k for the M performance suspension and you'll be left with the old struts/springs/sways that you can't even really sell (for actual value that is). Same thing with the brakes. Example would be Canada where you can order the M Performance brakes as a $500 option. Since this would be a factory option, no installation fee's and the cost could be based on the difference between stock and m performance part. So now 1k for full suspension upgrade, 500 for brakes, 1k for PPK, 500 for non RFT and now you have a track ready car right off the boat. Your weight/balance questions were interesting and I appreciate the research you did in putting them together. Regarding the steering rack, I think it is provided by a supplier, so they are not constrained by OEM product life cycles. If people complain about TRW steering racks on BMW's, then they are significantly less likely to get selected for future projects. Suppliers have a much rockier road from a business perspective, where one day they can have tons of contracts and engineers, and the next they could lose contracts, be bought by foreign investors and lay off half their engineers. So simply put, they will constantly be updating their product and working with OEM's to make software improvements through TSB's, recalls, and MY updates.
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05-06-2013, 12:29 PM | #236 | |
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Personally, the determining factor between which model I would buy would be which engine I want.
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05-06-2013, 02:34 PM | #237 | |
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05-08-2013, 12:32 PM | #238 | |
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At Laguna Seca...they felt the extra power of the 335...but felt the 328 was better balanced. 335 a bit quicker on the straights....328 bit better handling in the twisties. And look guys...the 0-60 mph times are only about .4 to .5 seconds different between the two. So only you can decide if the .4 to .5 second advantage..and giving up a bit of handling... is worth $5k. Regardless of your choice...you will be glad you have an F30. Last edited by Rover; 05-08-2013 at 12:43 PM.. |
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05-09-2013, 08:10 AM | #239 |
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06-03-2013, 09:06 AM | #241 |
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The D is auto only, and will be a fair bit slower than the 335. But the mileage and price will be compelling. I would say there is no harm in test driving one.
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06-03-2013, 03:09 PM | #242 |
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I like both the 328i and the 335i. The 328 4cylinder with a proper tune is loads of fun. The 335i is a monster especially at 60+. The 328i tends to start to slow down around 80 to 90s but the 335i just keeps going.
It is a tough decision... When my lease is up I am going to compare the M235i, 335i, and the 328i... I have the feeling I may go with an M235i. |
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