This is the spot where I may have gotten slightly airborne last night

Kinja'd!!! "Textured Soy Protein" (texturedsoyprotein)
09/13/2016 at 17:02 • Filed to: None

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I’ve been intentionally driving on crappy roads to test out my new !!!error: Indecipherable SUB-paragraph formatting!!! that replaced my E36 M3 front bump stops which were way too soft and letting my Koni FSD shocks bottom out on sharp impacts. Yesterday, I underestimated a BUMP sign.

Most people with lowered E9x BMWs use the front bump stops from the E36 M3 because they are a similar OE BMW bump stop but shorter, and this gains back some shock travel before engaging the bump stops. But I’ve learned the E36 M3 front bump stops are really too soft for the heavier E9x cars, especially my awd E92, and especially with my !!!error: Indecipherable SUB-paragraph formatting!!! that have blowoff valves in them that soften the shock up in response to sharp bumps. The shocks would go soft on big bumps and then crash bang into the end of their travel because the bump stops were too soft.

Last week I replaced the front bump stops with some stiff-but-progressive Speedthane polyurethane foam ones. I started out cautiously testing the limits of the front suspension, and the initial results were very encouraging, so I’ve gotten a bit more adventurous with seeing how they handle bumps. So when I say I’ve been intentionally driving on crappy roads, I actually mean, “driving around Madison, WI like anyone else who lives here, because many of our roads suck.”

Last night I was out for a drive on some back roads, when I saw a BUMP sign. The very exact BUMP sign at the top of this post, in fact. I thought, “hey this is an opportunity to test my so-far-very-kickass new bump stops!” and slowed down a bit because I didn’t want to go nuts with this bump. As I would soon learn, it was not quite slow enough.

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Ok, so it didn’t go exactly like that. For one thing, my car has like 1/4 of the ground clearance of this Audi, so the plastic undertray made a nice gentle brushing noise on the ground (but not a horrible crunching cracking “oh crap now I need to browse the parts catalog again ” noise).

But really other than that, and the Z4M rear bump stops (the other common lowered E9x bump stop choice) maybe being a hair softer than I’d like, the car handled it great!

Now I just have to figure out which Speedthane bump stops to put on the rear and I’ll be flying like Colin McRae.

Time to proactively invest in some plastic undertrays. There’s only a !!!error: Indecipherable SUB-paragraph formatting!!! ...

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And then !!!error: Indecipherable SUB-paragraph formatting!!! ...

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I’m sure all of these will be nice and affordable. It’s not like they’re made by magical elves in the German forest of Plästicträyetrieeländphäliä or something.


DISCUSSION (5)


Kinja'd!!! Twingo Tamer - About to descend into project car hell. > Textured Soy Protein
09/13/2016 at 17:16

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Most of the plastic trays on my e36 are held on with self tapping screws and zip ties. Id like to take this opportunity to partially blame schaefft for this after he drifted it across a rutted field haha. The twingo thankfully has none.


Kinja'd!!! Jordan and the Slowrunner, Boomer Intensifies > Textured Soy Protein
09/13/2016 at 17:38

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I got airborne on the way home this afternoon. I beat a light at the speed limit. Apparently there needs to be a bump sign.


Kinja'd!!! You can tell a Finn but you can't tell him much > Textured Soy Protein
09/13/2016 at 18:53

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Who supplies the plastic to BMW for those undertrays? I need to call my investment guy*.

* I don't actually have an investment guy.


Kinja'd!!! Dusty Ventures > Textured Soy Protein
09/13/2016 at 23:02

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What’s that about jumping our dailies?


Kinja'd!!! PetarVN, GLI Guy, now with stupid power > Dusty Ventures
09/14/2016 at 03:24

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12/10