Quote:
Originally Posted by duder13
Yeah, I was just saying part #17 actually has the same bushings as the OEM arm. Arm #18 is the one that has the bearing upgrade.
Still, even with the same bushings, the M3 arm #17 still looks way cooler and is a little lighter.
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The factory 135i rear suspension parts are cheap stamped steel with a steel insert that sits inside a soft rubber bushing.
The M3/1M bits are light alloy arms with a hard bearing pressed into the arm. The black rubber is quite hard compared to the 135i bits.
The differences are night and day.
Some pics for reference, from the interwebs....
non M and ///M rear suspension...
///M rear suspension...
stock 135i suspension...
