Thread: Springs
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      01-13-2018, 08:10 PM   #11
Kgolf31
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Drives: 2007 Z4MC, 2012 128i
Join Date: Sep 2008
Location: Ohio

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Quote:
Originally Posted by bbnks2 View Post
My 135i weighed in at 3220lbs. The weight difference between a 135i and 128i is over-stated. All that is different is a turbo and an intercooler. True though that the extra weight is over the front wheels which moves it to a 52/48 weight distribution instead of 50/50. The mandatory sunroof doesn't help either.

As for travel... I'd beg to differ. Do the math. Cornering loads can exceed 1500lbs on the outside tires. Even at a spring rate of 500lbs/in that's 3in of compression travel (not including the sway bars added roll resistance of a big bar that puts you closer to 800lb/in). People who don't want to run 500lb/in, which is pretty damn stiff compared to say 300lb/in, would all benefit from running the longest spring possible when using the relatively softer springs vs your setup. If you're not already riding on your bump-stops at times, you are probably a hair away from it.
Calculations are nice until you have to deal with real world.

I'd like to say, I've zip-tied my shocks and never went to bumpstops. And my car ran pretty damn well...
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