Quote:
Originally Posted by serven7
what is it about these springs that make them so EDC compatible?
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Shorter springs can alter suspension geometry, and have different stifness (Dinan explicitly states that their springs are firmer). This all means that the stock suspension tune is significantly changed. As we all know, it takes BMW lots of design and testing time to get that all right. Now, it has to be done again since the parameters are different. Dinan has a reputation for doing that really well. You can buy adjustable suspension for your car, but most people don't have a clue as to how to tune it, and you don't get there by just using common sense. You need someone with the appropiate engineering expertise, and test drivers who really know what they are doing. Dinan has a good reputation in that regard, and that is partially what one would be paying for.