Quote:
Originally Posted by Gangplank
Been following along here as well. The Koni STR.T sounds like a decent set up. Have you upgraded the rear sub frame bushings (M3 RSFB or inserts)? I didn't see it in the build thread so wasn't sure.
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I sent you a PM as well -- I'll go ahead and copy/elaborate what I sent to you there for the sake of others who may have the same questions.
My car was at a similar mileage (a little higher) than yours is when I installed the Koni/Eibach setup and I did NOT replace any other rubber parts -- just springs and shocks. I was not having any problems with the OEM suspension when it was replaced, so I just examined everything and confirmed it wasn't torn or looked worn. On the full OEM suspension, I would complain that going full throttle from a light roll would result in a very unsettled feeling from the rear end. It wasn't traction being lost, but what I understood were flimsy rear sub frame bushings. I haven't noticed that problem nearly as much with the wider rubber and lower stance.
I too thought about adding the E36/Z4 bump stops, but after doing some research decided to stick with the E82 OEM bump stops. I did not trim these either. I've had zero issues regarding bump stops in the 10,000 miles+ I've put on the car since then and my car covers all types of road situations -- city traffic, long highway stretches, mountain climbs, etc.
My top hats were in great shape, and since I daily drive the car and wasn't willing to give up the increased tire wear for more negative camber, I just added them right back to the Koni/Eibach combination and went about my way. No rubbing in the front or back with my existing 235/265 Hankook V12 tires.
If you have the extra dough, then definitely spring for the full freshen up, but I didn't find it necessary at my mileage or for how I currently use the car. It's not fair to expect the feel of a coilover-equipped car with loads of negative camber dialed in and set up for performance, but if you're just looking for a lower stance, a slightly stiffer feel in the turns, and close to OEM ride quality, this would fit the bill nicely.