Quote:
Originally Posted by BillG2A
Front to rear percent was not as close to 50/50 as I had wanted.
But this is not a race car and i am not using the existing performance envelop of car.
Racing shop suggested poly thrust bushings over the aluminum spl monoball units since it is street car for less NVH
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You achieved 50% cross weight; that was your principal goal, wasn't it? FWIW, my front/rear %s are just about the same as yours. (see below)
I left my rear seats in, and your numbers lead me to think they weigh around 50-60#. That's a real no-brainer weight reduction if lap times are a goal.
I stayed away from stiffer front bushings as I knew I'd track the car only a handful of times. (I stopped after six events.) Stiffer bushings are why I passed on the M2; I really don't care for them the way streets are today.
You have to try a bushing to really know what it's going to feel like in your car with your mods, though. I imagine the monoballs sharpened your steering feedback up nicely. Do you have any idea what the service life is on them?
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2017 M240i: 23.8K, 28.9 mpg, MT, Sunroof Delete, 3,432#, EB, Leather, Driving Assistance Package, Heated Front Seats | Sold: E12 530i, E24 M635CSi, E39 520i, E30 325is, E36 M3 (2)
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