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      06-21-2014, 02:39 PM   #1
Dr. Indiana Jones
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M235i Newbie Questions

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First off let me qualify that I'm not a car expert, and I've only driven the M235i for about 700km, so forgive me if these questions seem entry-level. That being said, I have a few concerns as follows (having previously driven a Honda Prelude SRV coupe, 225i sedan, and 335i coupe):

> For the love of God I cannot feel any difference in the suspension/handling when toggling from eco pro all the way up to sport+ (what gives LOL?).

> Unlike the 335i (which was a joy to drive not only in manual mode but also DS (auto-sport) mode, the M235i in DS auto seems to upshift too soon and not downshift soon enough. This is in part due to the difference in gear ratios (see chart below - sorry the numbers get crammed but basically read as follows: 1st gear> gear ratio for 335i and corresponding suggested speed, gear ratio for M235i and corresponding suggested speed, etc.):

335i Speed M235iSpeed
Auto Km/h Auto Km/h
1st gear 4.17 20 4.71 15
2nd gear 2.34 40 3.14 30
3rd gear 1.52 60 2.11 45
4th gear 1.14 80 1.67 55
5th gear 0.87 100 1.29 70
6th gear 0.69 120 1.00 85
7th gear - 0.84 100
8th gear - 0.67 120
Reverse gear 3.4 3.30
Final drive 3.46 3.08

E.g., under normal driving at 120 kmh u'd be in 6th gear for the 335i and in 8th for the M235i, etc. etc.
Is there anyway BMW can re-program the DS auto to be more aggressive w up/down shifts (she seems to upshift too quickly and downshift too slowly)?

In manual mode, does anyone find having to manually shift up to 8 gears a bit of a pain/redundant?

As always, I'd appreciate all of your feedback for those who have the auto tranny.

Last edited by Dr. Indiana Jones; 06-21-2014 at 02:45 PM.
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      06-21-2014, 05:18 PM   #2
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> Unlike the 335i (which was a joy to drive not only in manual mode but also DS (auto-sport) mode, the M235i in DS auto seems to upshift too soon and not downshift soon enough. This is in part due to the difference in gear ratios (see chart below - sorry the numbers get crammed but basically read as follows: 1st gear> gear ratio for 335i and corresponding suggested speed, gear ratio for M235i and corresponding suggested speed, etc.):

335i Speed M235iSpeed
Auto Km/h Auto Km/h
1st gear 4.17 20 4.71 15
2nd gear 2.34 40 3.14 30
3rd gear 1.52 60 2.11 45
4th gear 1.14 80 1.67 55
5th gear 0.87 100 1.29 70
6th gear 0.69 120 1.00 85
7th gear - 0.84 100
8th gear - 0.67 120
Reverse gear 3.4 3.30
Final drive 3.46 3.08

E.g., under normal driving at 120 kmh u'd be in 6th gear for the 335i and in 8th for the M235i, etc. etc.
Is there anyway BMW can re-program the DS auto to be more aggressive w up/down shifts (she seems to upshift too quickly and downshift too slowly)?

In manual mode, does anyone find having to manually shift up to 8 gears a bit of a pain/redundant?

As always, I'd appreciate all of your feedback for those who have the auto tranny.[/quote]


Well I guess beauty is in the eye of the beholder. I love the 8AT. When in ECO Pro it shifts very early and is slow to downshift, but comfort and certainly sport/+ modes it holds it pretty high, especially when the auto is in sport mode. Manual mode is a blast for me, especially shifting at 3/4 throttle it mid RPM (4k or so) and getting the pops from the exhaust when it shifts. I am wondering if your car has something wrong with it? Then again, the only other auto cars I have driven in the last 15 years have been my wife's Toyotas, so I don't have any other performance auto experience.
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      06-21-2014, 05:48 PM   #3
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The 8AT is a superb trans... As good as most DC systems. There must be something wrong with yours. Also, there is a significant difference in suspension firmness in Sports mode, very noticeable.
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      06-21-2014, 07:56 PM   #4
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The sport mode and sport+ are user programmable to change throttle response, suspension stiffness! or both. You need to check how your system is setup.

Most people have the buttons change both.
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      06-21-2014, 08:29 PM   #5
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Thx gang. I'll have to get her checked out. I notice nothing in suspension firmness, and in auto DS can't get her to delay the shifts to the mid 4K RPM before upshifting, etc. I dunno, c/b software issue. Unlikely it's anything serious, but I'll let u all know. On a more positive note, u basically have full control in manual mode (a lot of gears to shift, and sometimes u need to double-shift, especially when downshifting to get the engine to brake the car). Basically the old 335i 4th gear is equivalent to the M235i in 6th, etc. so it takes some getting used to. I suspect the shift points in auto DS can be manipulated/changed for the aggressive driver's like me. One thing I will say, is unlike the 335i which u can baby or mash, the M235i needs to be driven hard to perform at its best. Anyway need some more time behind the wheel to harness this beast.
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      06-22-2014, 06:40 AM   #6
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To test the sport button, drive over some rougher roads in both modes. I can clearly feel it in sport mode. If you can't perhaps something is set wrong or the system is not working.
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      06-22-2014, 07:49 AM   #7
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Quote:
Originally Posted by Dr. Indiana Jones View Post
First off let me qualify that I'm not a car expert, and I've only driven the M235i for about 700km, so forgive me if these questions seem entry-level. That being said, I have a few concerns as follows (having previously driven a Honda Prelude SRV coupe, 225i sedan, and 335i coupe):

> For the love of God I cannot feel any difference in the suspension/handling when toggling from eco pro all the way up to sport+ (what gives LOL?).

> Unlike the 335i (which was a joy to drive not only in manual mode but also DS (auto-sport) mode, the M235i in DS auto seems to upshift too soon and not downshift soon enough. This is in part due to the difference in gear ratios (see chart below - sorry the numbers get crammed but basically read as follows: 1st gear> gear ratio for 335i and corresponding suggested speed, gear ratio for M235i and corresponding suggested speed, etc.):

335i Speed M235iSpeed
Auto Km/h Auto Km/h
1st gear 4.17 20 4.71 15
2nd gear 2.34 40 3.14 30
3rd gear 1.52 60 2.11 45
4th gear 1.14 80 1.67 55
5th gear 0.87 100 1.29 70
6th gear 0.69 120 1.00 85
7th gear - 0.84 100
8th gear - 0.67 120
Reverse gear 3.4 3.30
Final drive 3.46 3.08

E.g., under normal driving at 120 kmh u'd be in 6th gear for the 335i and in 8th for the M235i, etc. etc.
Is there anyway BMW can re-program the DS auto to be more aggressive w up/down shifts (she seems to upshift too quickly and downshift too slowly)?

In manual mode, does anyone find having to manually shift up to 8 gears a bit of a pain/redundant?

As always, I'd appreciate all of your feedback for those who have the auto tranny.
225i? When and where did you drive this?
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      06-22-2014, 11:28 AM   #8
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To see diff between sport/comfort susp/handling do this...

Make sure you do this in a place where it's safe.
Start moving your steering right to left and left to right continuously about 15 degrees to each side and at the same time switch between comfort - sport and back to comfort a few times...

You will definitely notice the steering getting heavier when you go from comfort to sport and get lighter from sport to comfort
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      06-29-2014, 05:14 PM   #9
Dr. Indiana Jones
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Quote:
Originally Posted by deathsliver View Post
225i? When and where did you drive this?
Ooops typo s/b 325i LOL.
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      06-29-2014, 05:18 PM   #10
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OK thx gang - I'll give some of these stunts a try. My BMW Specialist indicated for the suspension/chassis setting, in sport the shocks vibrate/oscillate a bit more than in comfort mode. The difference is very subtle going over bumps. I think I prefer the comfort set-up better... and I believe u can achieve this in sport mode by leaving the chassis w/o sport and drivetrain w sport. Damn confusing if u ask me LOL.
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      06-29-2014, 06:29 PM   #11
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When driving in manual Sport mode I usually never get above "M5" in gear selection. I found 6-8 just too tall for manual sport shifting and when I hit a long straight away or just want to cool it down for a bit I move it back to auto mode.
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