Originally Posted by research
Alpina, have you found a good solution with your suspension experiments that help (noticeably I might add) with tramlining? Or where you live the roads are so good you never really have a problem with tramlining?
I think the suspension is one of the weaker points of the E9x - not necessarily cost wise as parts are cheap, but the way they're put together to give a universally good driving experience. On smooth roads the 3 series is as stables as a bigger 5 series, but go on poorer roads and car fidgets, skips and moves about way too much. Would you agree?
The mods I have done have all but eliminated tramlining. I think the combinatino of the floppy bushings, hard side wall RFT tires are the reason.
Keep the suspension firm and in place (m3 bushings), make the tires complaint and allow some bend and allow for greater grip - non-RFT tires.
Just the M3 wishbones/tension arms in the front, with non-rft tires did helped immensely for tramlining.
EDIT: Yes, stock the tramlining was very bad - you had to keep 2 hands on the wheel.
2008 335i E92 Black, Procede Rev 2.5 (11-1 map), BMS DCI, AR Catless DPs, AMS FMIC, Procede PWM Meth, Forge DVs, CDV delete, 230s w/ 235/265 Michelin PSS, Dinan S3 susp w/ front/rear M3 arms (4), Wavetrac LSD, Subframe bushings, Dinan Rear Sway, Rogue toe arms, Stoptech Slotted rotors, Stoptech Street pads w/ steel lines