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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Mechanical Maintenance and TSBs: Break-in / Oil & Fluids / Servicing / TSBs and Service Bulletin > trans "break in" period for sport mode
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      09-06-2012, 02:55 AM   #1
steadymoddn504
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hi all 328 owners with 8 AT, does anybody have a clue as if to there's a "break in" period for the transmission when driving only in sport mode? i normally dnt use sport mode, but now that im running on 19s i tend to get on it alot for better shock absorbtion but the shifts feel out of wack. hopefully Im asking the ? right but it seems to me as if the gears take longer to shift when doing 40 n under in sport mode. I mean I know it tightens up the suspension a little and throttle response is improved but I hate cruising through an alley or 35 mph zone and it feels like I'm in 3d gear revving up to 3 rpm all the time. any how I was just wondering if someone else is experiencing this shift lag..
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      09-06-2012, 04:23 AM   #2
Nero7
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The break in period for the automatic transmission is 500 km (310 miles) and you should not rev more then 4500 rpm. When i choose sport mode or sport+ it shifts approximately around 4000 rpm, but shouldn't sport mode allow higher revs?
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      09-06-2012, 01:15 PM   #3
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this may be a stupid question but as the saying goes, the stupid question is the only one not asked.

anyway, if the cars need to be broken in and one has to do a euro delivery or a pcd, don't you need to drive the car faster to enjoy it? I would not want to go to the nurburgring only to drive like a grandma. Just a question that has been lingering in my head because i really wanted to do an ED for the F30 but my son is still too small.
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