Lowering Springs and Bumpstops

[Terminator2]

So about ten days ago I installed Eibach Sportlines on my 2016 GT Premium (it's loaded with options so it's heavy). I used Eibachs shorter Bumpstops included with the Sportlines in front and I cut the stock rear bumpstops to save time. I used to own and modify jeeps so I am big about checking shock travel vs bumpstops and I also don't believe that shock boots are a good idea due to the possibility of water/dirt and mud getting possibly trapped inside the boots at some point which will ruin the shock really quickly (off-roaders rarely ever run shock boots). Enough of my rambling though. Having the boots off allowed me to see how much up travel was left before touching bumpstops. The amount I had was 0.0" in front and 1" in the rear (cut stock rears by over 1") So the car was resting on the front Eibach bumpstops which definitely makes for a rougher ride. I measured the drop at ~1.25" front and ~1.5" rear initial. The Eibach stops are about 3/8"-1/2" shorter than stock but the Sportlines on my heavy GT are designed give around 1.5" actual drop in front and rear. I cut off almost an inch off the front bumpstops so they are now almost 1 1/2" shorter than stock and the front has come down another 0.25" and now looks level. I cut the stock rears down just over an inch initially and they are fine as they are.

Moral of the story if you are running more than 0.75" drop on stock stops or more than 1.0" on slightly shorter stops check your bumpstops at ride height and make sure you are not riding on them before blaming your shocks or springs for the bouncy ride on your car. Dampers and springs cannot do their jobs if bumpstops are constantly interfering. No rubbing over big bumps including speed bumps in running 275 35 20 tires on 20x10.5 ET25 square setup.

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