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E92 335i - Track Suspension Advice Needed
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12-26-2012, 05:35 PM | #1 |
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E92 335i - Track Suspension Advice Needed
The Car: 2007 e92 335i 6MT with sport package
The Goal: This is my daily driver so I want to maintain a comfortable ride as much as possible. I currently attend autocross events about 7-8 times a year and plan to start doing track days probably about twice a year. The Plan (so far): First and foremost I'm getting a new set of tires in the spring and am going with either Dunlop Star Specs or Hankook RS-3 non-runflats. Which brings up my first question. Will switching from run-flats to non-runflats mess with the ride quality at all? I feel like it will be alot less stiff and decrease handling performance if left alone. Next thing on my list is to upgrade to M3 Front Control Arms (Tension Strut and Lower link) Then, Either M3 front and rear sway bars or the one that hotchis offers. Would like to hear opinions on which one you guys feel would give me what I'm after. Eventually, would like to do M3 Rear subframe bushings, rear guide rod, and rear upper links but will probably hold off on these for now. Now the tricky part that I have no idea where to even begin. What suspension to get. I dont want to spend over $1k on the suspension (not including all the bits mentioned above) so I think any coilover kits would be out of the picture, and would most likely be looking for a spring & damper combo. Any advice is welcome and if I left something out let me know Thanks! BTW, I have searched around and thats why I decided on the M3 control arms at the very least, I couldnt find any real definitive answers on any of the other components. Saw a lot of stuff for E90's but not E92's and am not sure how much difference there is between the 2.
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12-27-2012, 04:58 PM | #2 |
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why not a used set of coilovers.....?? theres lots in the FS section for 800-1250.
shocks/spring combo's will never compete with a good set of KW v2/3's
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12-27-2012, 07:29 PM | #3 |
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Thanks for the suggestion, I didn't really consider that as an option. After looking into it seems the KW V2's will best suit my needs. I'll keep my eyes open in the classifieds.
How's the rest of the plans sound? Any suggestions as far as sway bars go?
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12-27-2012, 09:23 PM | #4 | |
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2. LSD and subframe bushings 3. Suspension (dampers, springs, bits) Sway bars can decrease your performance if not chosen correctly with the rest of your suspension. They are just one of the variables in the suspension system. Take your time and read read read and talk to people at HPDEs. It is better to drive your car as is at one or two HPDE and then make improvements based on that baseline. GL |
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12-27-2012, 09:50 PM | #5 |
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I would skip all the M3 bits and go right for better dampers/springs. TC Kline might be within range.
Consider Michelin Pilot Super Sports. A tad expensive but they really are "super" in every way (except maybe in the snow ). Hankook RS3 sucks in non-dry conditions. PSS is also quieter and lasts longer.
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12-27-2012, 09:54 PM | #6 | |
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12-27-2012, 09:58 PM | #7 | |
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12-27-2012, 10:04 PM | #8 |
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Sure you can just get camber plates. It is the single best mod for track. You will add a ton of grip in front and can even use the same wheels to run R comps down the road, also 255 square. This is exactly why you need to attend HPDE first and learn what is possible and makes sense. Also, you should check out Tracking section and Apex wheel threads.
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12-28-2012, 12:56 PM | #10 | |
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I'd love one! Just don't have the funds to justify spending that much on one mod. It will probably come eventually just not at the moment.
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12-28-2012, 05:35 PM | #11 | ||
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12-28-2012, 05:56 PM | #12 | |
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12-28-2012, 06:51 PM | #13 |
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I am in a similar situation. I'm planning to start with the M3 control arms/torsion links plus rear subframe bushings. I was considering camber plates, but am concerned about NVH issues, as I won't compromise daily driver functionality. Is there an upgrade for the top bushings, without going to camber plates?
I think I'll leave sway bars until I fit an LSD. I like the idea of a square setup for autox - perhaps on 17s. |
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12-28-2012, 07:48 PM | #14 | |
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so just get an alignment and don't worry about it |
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12-28-2012, 09:14 PM | #15 | |
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I have Apex ARC-8 17/9.5 square, super light @ 17lbs and concave. GL |
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12-28-2012, 09:18 PM | #16 |
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Does anyone like the 265 235 staggered setup at track, I am rigging 235 square nitto invos and feel like I can use a little more rear traction, even with an LSD.
This thread belongs in the tracking section. |
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12-29-2012, 01:02 AM | #17 | |
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12-29-2012, 10:32 AM | #18 | |
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LSD is huge. Unless OP turns no corners. What I did is expensive, but yields a delightful daily driver and track performer. Do in stages if you wish - LSD before rear M sway, please! Remarkably smooth handling with unending grip, 2.5° camber, if you can tolerate tire life. You should learn how to do precision alignments! Equip available from racing sites - highly recommended - you may want diff setup for street than track. Camber plates a great blessing. . Last edited by CALWATERBOY; 12-29-2012 at 10:39 AM.. |
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12-29-2012, 01:19 PM | #19 | |
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One thing I noticed was that Vorshlag sells different camber plates depending on if you are running stock suspension or coilovers. That being said does it make sense for me to just suck it up and get the KW V2 Coilovers I want to get eventually and the corresponding camber plates now? Would hate to have to buy a second set of camber plates down the road when I buy the coilovers. Thanks for the advice so far guys, really great insight here! Keep the knowledge coming!
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12-29-2012, 02:01 PM | #20 |
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What are the exact goals for the car? I can tell you right now if you want a successful platform for autox the 335i isnt going to compete well in any class. It can't fit enough tire, it's too heavy, and the competition is too high (STI, Evo, etc.)
Vorshlag camber plates have great reviews, generally favored by those doing double duty (street + track). Ground Control plates offer a wider range of settings but tend to be noisier. If I were you I'd wait to do your suspension tuning all at once. Learn to drive the car as it is... Save money for disposables like tires, brakes, fluids etc. once you've got that figured out and it's truly the car that's holding you back then drop money on everything and tweak to your liking. If you're like me you'll realize the 335i isn't going to meet your goals and youll buy a dedicated car... If you're a junkie like me ;-) |
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12-29-2012, 05:03 PM | #21 | |
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When I first bought the car I was so stoked about all of the power that could easily be added to the engine, but after going to those autoX events I realized the car needed help in the handling area first and foremost. A dedicated track car would be awesome, but I feel like that will end up costing me even more money than the few mods I had in mind for my car. I'm only looking to spend about 6k in mods at the max. To get a track car I'd have to spend close to that or more on just the car and would still need to modify that as well. Also, the fact that my fiance would flip her sh!t if I said I was getting another car (as a toy), and still have my motorcycle To sum up this rant.... Will the wheels I have fit if I get 255/35-18 square with the addition of the camber plates? Can't wait for the summer to get here so the fun can begin!
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12-29-2012, 05:47 PM | #22 | |
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