Quote:
Originally Posted by mastek
Your H&R springs have no real-world R&D time...thats a fantasy to justify buying a cheap mod for a car so it looks cool ...and to the undoing of millions of dollars of real R&D by a world class car manufacturer.
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Fact is the millions of dollars you're attributing to real world R&D on the factory springs are geared towards hitting the sweet spot between handling and comfort.
People adding spring such as H&R are implicitly trading some comfort for perceived handling and looks. The factory setup is decidedly not optimized for handling - not in the F10 M5. This is not a track car.
Personally, I wouldn't consider the KW setup on my car because it requires sacrificing the factory EDC. I am not interested in disabling any core function of my car in order to, let's face it, make it look better. Very few KW buyers are planning to track. Most that I've seen buy them to slam further than springs would allow.
I've never installed coilovers on any of my cars, but I've driven an E60 M5 on KWv3s and did find the ride to be very good. My E60 M5 was on Eibachs and while it was a bit firmer than stock, I liked how it felt and looked - and didn't consider KW, again, due to sacrificing factory EDC.
Whether it would have been faster around the 'ring on springs, coils, or the stock setup is entirely debatable, but I'd wager it would have a lot more to do with the driver than the setup at the corners.