I think it could very well be the bump stops. I did not trim my OEM bump stops, as the manufacture suggested that it was not necessary for these springs. Do you think if I trimmed them a little bit that it would help?
I don’t recommend doing that because you change the total travel of the car. I’m not to worried about the shock travel, just search for “oil pan cracked”. Low compression damping control in combination with shortened bump stops gets your oil pan closer to the ground.
I found this article of the german car magazine AutoBild Sportscars. They tested several coil overs for track time and daily driving. I used google to translate at least the conclusion of this article.
https://www2.bilstein.com/wp-content/uploads/2017/08/ABSC17_09-092-099-Service_Fahrwerke.pdf
Conclusion:
Stay away from low-cost coil overs like the TA-Technix! With badly fitting parts, this is a serious problem. It would not have been difficult to beat the completely undefined OE setting. The coil overs from Bilstein, H & R, KW and Vogtland make it worlds better. The Vogtland set up was particularly surprising. The customer receives high-quality for just under 600 euros.
Set for fast lap times, an impressive lowering and better comfort than with the OE set up. At the end, however, no one beats Bilstein; their set up is fast, error-free and comfortable on all test sections. A bit more dampening on worse roads would have done well for the set ups of H & R and KW. Fast lap times and extreme lowering are not all.
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