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BMW 3-Series (E90 E92) Forum
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335xi E90 handling improvement
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03-13-2019, 05:12 PM | #25 |
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03-20-2019, 07:51 PM | #26 |
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Good to hear that the KW V1's work well. Hawkeye and blau, both those cars look fantastic. Blau, do you notice any adverse effects due to the 255 square tires? I'm considering that width for a summer setup if it fits but I've heard some say it makes the car track funny.
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03-22-2019, 09:33 PM | #27 | ||||
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The most cost effective handling mod I did was Powerflex rear upper shock mounts. Easy DIY and no strange noises. Quote:
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03-23-2019, 06:51 AM | #28 | |
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I also replaced the upper rear shock mounts but with a Monroe part number that was reported on this forum somewhere - just not sure how to evaluate because the OEMs that I replaced were nearly destroyed. |
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03-27-2019, 11:44 PM | #30 | |
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04-01-2019, 12:30 PM | #32 |
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Drives: '09 n54 e92xi, 6mt, kw v3
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Come up to Louisville on 36 and you can drive my car and ~then~ have a beer. See my signature...
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04-03-2019, 08:23 AM | #33 |
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Do this and you will be impressed. This is my setup after several years of tinkering.
-Michelin Pilot Super Sports -Dinan Springs -Dinan “Ride Control” kit -Koni Yellow Shocks Front: -UUC Front Swaybar -Poly front control arm bushings Rear: -BMW OE rear E90 M3 Swaybar -BMW OE rear E93 M3 subframe brace -Turner Motorsports Delrin Subframe Bushings -Turner Motorsports Delrin Differential Bushings -BMW Group N toe arm bushings I also had really good results running the staggered tires in reverse (i.e. 255 up front and 225 in rear). With Xdrive on the the race track it feels very neutral and surprisingly predictable. |
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04-13-2019, 02:37 AM | #34 |
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carguy138 how long have you been running the delrin bushings and are you running them all year round? i wonder how durability is on these things.. also, how much lowered is your car and how much shorter are the Dinan bump stops ("ride control" kit)?
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04-18-2019, 01:47 PM | #35 | |
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Haven't measured the ride height but it's pretty similar to a standard RWD m-sport. The delrin subframe bushings didn't change NVH at all. The differential bushings did create a bit of gear whine, but I like it. Makes the car feel a bit more mechanical and not intrusive at all. Although I do have a manual so it may be different with an auto. Best way to describe the gear whine- sounds a bit like a stock WRX drivetain wise. In terms of comfort, I got rid of the BMW PE exhaust after three years because of the noise. That should give you an idea of what I find tolerable for daily driving. |
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04-18-2019, 09:02 PM | #36 |
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I tried Delrin antisway bar bushings years ago. After driving around for about 1 year, they started to rattle and I took them off. The constant pounding and twisting of driving on bad roads caused them to compress, resulting in a loose fit. Mind you, antisway bar bushings undergo different torsional forces than subframe bushings, so I'm not sure how relevant my experience would be.
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04-21-2019, 12:23 PM | #37 |
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I have pretty much same mods as kenmar. I'm running the ycw coilovers with swift springs. When doing coilovers you want to keep close to bmw stock spring ratio of 1:3. The Monroe rear shock mounts did make a difference. It got rid of the some of the slop in the rear or i should say bounciness. For tires I'm running 18" staggered setup 225 f 255 r with conti dws 06. I have the differential lock down kit and only thing i would of done differently would of been get solid subframe bushings instead of m3 bushings.
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04-22-2019, 12:40 PM | #38 | |
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04-22-2019, 07:53 PM | #39 |
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04-22-2019, 08:10 PM | #40 | |
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they have them for xi?
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Dinan Stage 3/Cobb FMIC/ER Sport Oil Cooler/CPE Catted DP/BMS DCI/Eisenman Race/Koni Yellow F + Dinan R/Dinan Springs/UUC F + R Sways/M3 subframe bushings/OEM 313 Wheels/M3 steering wheel
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04-23-2019, 04:56 AM | #41 |
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04-23-2019, 12:30 PM | #42 |
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04-30-2019, 01:08 PM | #43 |
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04-30-2019, 09:41 PM | #44 |
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Per the website: "No need for preloading, re-greasing, or adjustments."
There's no doubt about the obvious design advantage over that of a poly bushing, but my concern is the price. For the same $$$, I can R&R with Strongflex bushings three times! And that is paying a shop to do it |
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