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      04-12-2017, 02:30 PM   #1
RaidersFan
First Lieutenant
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Drives: 2013 M3
Join Date: Oct 2012
Location: Pac NW

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340i with mods - how close to M3 performance?

Hi everyone,

My fiance is due for an upgrade: her 335is is out of warranty shortly, and it is better to get 5 seats this time around.

We have been keen on getting a low mileage M3 or M4, but her new job requires a lot of mileage with only $.40/mile of reimbursement, which is not going to offset an M-car.

Questions: how would a modded (say, upgraded suspension) 340i compare to a stock F80 M3? How about her current 335is (which has Dinan sways). If, for example, we threw $3500 into coilovers and swaybar?

Looking at a manual in either: I assume the tranny is the same in the M3/340i?

This car won't see the track, but she is every bit the enthusiast. It can't suck, or be worse than her 335 is, otherwise, I will never hear the end of it!
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