I've gathered the following Data for Swaybar Size (Non M3) but I would imagine it applies to all E46 models.
Manufacturer Front Rear
Stock 24 19
Eibach 27 21
H&R 27 21
UUC 25.4 23.8
RD 27 24
Dinan 24 22
There truly is a great write up on the UUC site in regards to sway bars. And I hope I am understanding this correctly. In comparison, Dinan retained the original diameter for the front, but beefed up the rear in hopes to correct understeer. If just running a 27 while retaining the stock 19 rear, to me, this would seem to really, really, understeer. (but what the hell do I know).
Since my car does not qualify for D stock, I can run both front and rear in the STS group. But the sizes, and options is what I'm having troubles understanding. I would like to buy sways, for the right reason, not just for having sway bars.
I think this thread will have great information. We should also start one for Shocks/Springs, as I already see interest in Koni's Running single / double etc.... Thanks
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