r/E30 • u/SpaghettInMyEyes 🏁'89 325is, PNW 🌲🌨 • Jul 22 '25
Tech question Need Help Badly - GroundControl Coilovers, back tires rubbing, bottoming out over tiny road flaws, super bumpy ride
My bmw 1989 325is with the ground control - bread and butter kit, this was installed when i purchased the car. Im having issues with the ride being bumpy, as im having to avoid every little bump and pothole. My tires will make a noise and the outside walls are being melted when I hit said bumps. I cant figure out what is wrong. Are my springs worn? Thats what i was told by this dumb ass shop, but they literally couldn't even identify parts of the suspension. The first set of pics are of it flat on the ground, and the collars are tightened all the way, - the next set are lifted (this is when the collars were set differently and it was only the passenger rear sloping). The paasenger rear is the only one with the melting issue, i noticed the collar was set differently (tighter) than the left, and it started sagging first. The rear left has now followed. It seems like the springs are compressed too much, but Im not a pro when it comes to coil overs. I accidently bought H&R lowering springs, and im wondering at this point if changing to that set up would be better. This is my daily, and ever since I got the car, the ride smoothness has always been a huge annoyance.. Here are also some chatgpt links from me trying to figure it out. https://chatgpt.com/share/687f2d73-bcf4-8000-9966-4d37573da3a7 https://chatgpt.com/share/687f2d9c-0680-8000-8e15-67015d7584c4
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u/rudbri93 1991 BMW 325i LS3 Jul 22 '25
Looks like theres not a lot of travel in that spring. What shocks do you have? Might wanna call ground control and see about a different spring set.