« Reply #29 on: 17 January 2021, 11:58 »
Welcome Marco from Milano!
You write better English than most of us.
I’m going to fly in the face of everyone else in the world, VW engineers included, and say no, you do not *need* DCC.
I’ve owned both an R56 Cooper D and an F56 Cooper SD so I know MINI suspension well enough.
I’ve also owned one or two (dozen) Golfs and only one of those had DCC and that was the suspension I liked the least since 2004.
I’m no expert and I’m certainly not an engineer, but I ran Golfs with upgraded suspension for 20 odd years therefore I do have my own opinions based on experience.
Every road test or press blurb I read at the car’s launch stated that the mk8 GTI had increased spring rates over the outgoing model.
It is the springs that dictate ride quality more than dampers when it comes to absorbing sudden changes in surface quality. A damper’s job is to try and control the spring’s oscillations so it’s very much a reactive thing. Add in the complexity of extra valving and all you get is extra delay.
A hard spring hitting a pothole is going to send a crash through the body-shell no matter how good your dampers are. And when you have a bad back that suddenly becomes the difference between living with a car or not being able to, never mind actually enjoying it. That impact is much worse when you have a comfort orientated damper setting but still have firm springs meaning there’s extra delay in the damper absorbing the impact harshness when hitting a pothole, ridge or expansion joint no matter how good the electronics are.
DCC to me would be perfect on a big SUV that has long spring travel, big walled tyres and decent bushing for a comfy ride.
A hot hatch has stiff(ish) springs, low profile tyres and firmer bushing. The hot hatch is about compromise and good reflexes, with a Golf GTI traditionally pushed towards a more comfort orientated set up (compared to many rivals) even without DCC.
Up until the mk5 GTI the standard GTI suspension was a bit rubbery (ok, the mk1 and mk2 weren’t too bad but would still cock a leg when cornering sharply or run a bit wide) but since then it’s been a very good compromise with its fully independent rear suspension.
Peugeot were once masters of GTI suspension and their answer was softer long travel springs and stiffer dampers able to cope with the cobbles of France. German suspension always seems to feature stiffer springs and the standard non-adjustable dampers have been developed to be a reasonable compromise.
Everyone else who is anybody as far as expert authority goes will disagree with me but that’s my uneducated take on it.

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‘23 8R, ‘20 8CS, ‘19 135iX, ‘19 TCR, ‘17 Ed40, ‘17 GTD, ‘15 7R, ‘13 GTI PP, ‘11 GTI, ‘09 GTI, ‘98 Ibiza Cupra, ‘05 GTI, ‘06 Polo GTI, ‘04 GT TDI, ‘05 Fabia vRS, ‘02 GTI T, ‘03 Ibiza TDI 130, ‘01 Leon 180, ‘89 mk2 16v, ‘99 Ibiza TDI, ‘96 VR6, ‘98 Ibiza TDI, ‘92 VR6, ‘88 mk2 8v, ‘92 Polo G40, ‘91 mk2 8v, ‘89 mk2 8v, 205 GTI 1.9, ‘83 mk1 GTI, ‘80 Scirocco GTI, plus some others I’ve forgotten