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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > N55 M135I Upgrade Chassis and Suspension
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      11-01-2024, 08:39 AM   #1
Dimitri95260
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N55 M135I Upgrade Chassis and Suspension

Hello,

I own a 2014 BMW M135i F21 and have already installed a downpipe, an FMIC intercooler, and completed a stage 2 upgrade. Now, I'm looking to improve the mechanical and chassis setup.

With a limited budget of around €2000, what would you recommend as the first modifications to prioritize? Which brands should I consider, especially with the option of finding parts second-hand on eBay?

Thanks in advance for your advice!
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      11-02-2024, 06:15 AM   #2
Dimitri95260
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Anybody???
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      11-02-2024, 07:44 PM   #3
alohasurftoad
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with suspension components, i would avoid used except if very lightly/low mileage.

aftermarket cup kit or coilovers by Eibach, Bilstein, Koni, KW, ST for overall handling improvement

Millway monoball bushing thrust arms and lower control arms for steering feel and precision

Wiechers front strut tower brace to decrease flex, increase rigidity between the struts for additional light increase handling and steering feel
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