I’ve been doing some research on suspension and have come to the conclusion that the best set up for my uses and (lots of canyons and 3-4 track days per year) personal preference is likely just springs with IE camber plates up front. When I bought my r53 a few months ago it was freshly equipped with bilstein b4s.

I wanted to check in on a few things with all the gurus on this site:

1. Is there really nobody who makes aftermarket linear springs for the r53 anymore? Looks like swift and tsw are no longer in production.

2. For those with progressive springs and stock shocks/bilsteins/konis, how is performance on the track? Does handling remain predictable? Is there any issues at the limit?

I understand the theoretical difference between linear and progressive springs. I would just like to hear personal accounts. I’m not worried/don’t care about stiffness in day to day driving.