12-13-2017, 04:42 PM | #1 |
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How well does the Automatic hold up in track days?
Thinking about getting a 2015 N20 228i with the MSPORT package as a fun car next to my daily driver, a heavy GT car.
Goal is to do 5-6 track days a year. I have to get automatic because my commute is absolutely insane and I want to drive it a few days of the week to work. A little bit worried though about how the automatic box will hold up to that many track days a year even if serviced more frequently. Am I worried about nothing or should I really be looking at cars that have a DSG box. |
12-13-2017, 05:24 PM | #2 | |
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transmission is the same used in the M235i R so if it's good for the racing version it should be good for the 228 which has less torque... |
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12-13-2017, 05:37 PM | #3 |
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The Racing version uses the same 8 speed ZF auto box?
Brakes: Yeah I've been looking at a few different cars and it seems some cars with MSport also come with the brake upgrades and some don't as an option. Besides fluid and steel lines, would you recommend a pad and rotor upgrade? Keep in mind, I do need to drive this on bumper to bumper stop and go traffic at least twice a week for 2 hours / day. Last edited by flypenfly; 12-13-2017 at 05:47 PM.. |
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12-13-2017, 05:42 PM | #4 |
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ZF8 is a great auto trans, raved over and over again by auto journalists and enthusiasts coming from dual clutch gearboxes. I have yet to hear of anyone really experiencing any issues here in the forums, or on the web, in regard to track day issues..
To my knowledge, Bryan_F22 and Anthony235 both have ZF8's, and track their cars regularly.
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12-13-2017, 06:04 PM | #6 |
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It's all they use at the performance center and people beat the shit out of those cars.
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12-13-2017, 07:29 PM | #7 | |
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I can attest after flogging an M235i for the better part of an 85 degree day in July. Not a whimper from the engine or transmission. The brakes however did go to the floor but came back up after a short cool down. It's actually what sold me on the M235i after seeing how well it performed under those conditions.
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12-13-2017, 09:19 PM | #8 | |
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RFB600 fluid and yellowstuff works well |
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12-14-2017, 09:57 AM | #9 |
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8AT works great for track days. I would pick it over a DCT from just a reliability stand point. Not to mention it can handle more power than DCT.
Now if only BMW put the shift paddles on the column instead of the steering wheel
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12-14-2017, 02:57 PM | #10 | |
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Was about 28*C that day, so not the hottest day ever, but the tires were definitely more of a limiting factor for hard threshold braking. I had a lot of ABS interventions on the 200km/h hard braking sections especially when I had to wind it down to 2nd gear. That's why I've invested in a square 18x9 setup with R compound tires. I'll run the Yellowstuffs on the street moving forward as I feel they're a great pad for mountain tours, but will be switching to PFC-08's for the track for sure.
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12-14-2017, 04:23 PM | #11 |
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8ATs are used in the M235i-R race cars. With that said, I would be cautious about adding any additional power as I do not believe the ZF 8AT in the 228i is of the same torque rating as the M235's 8AT. If I was racing an 8AT as often as you plan, I would make sure to be changing the transmission fluid every couple of years.
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12-14-2017, 05:26 PM | #12 |
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Hmmm so if I wanted to add a stage 1 software + intercooler + maybe intake in the near future, that's not a good idea with the 8AT??
Does the 8AT for the 228i and M235i have different part numbers? |
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12-14-2017, 05:37 PM | #13 |
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Okay looks like the part numbers are actually different:
http://www.realoem.com/bmw/enUS/show...diagId=24_1132 http://www.realoem.com/bmw/enUS/show...diagId=24_1330 228i 24008638283 GA8HP45 - ZBS M235i 24008645366 GA8HP45- ZB5 Could just be gear ratios are different without any other enhancements, not sure. |
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12-14-2017, 05:53 PM | #14 |
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I'm wondering if it's just a different computer, or even simply, a software flash? I would think the ratios in the 8AT would be great for any newer turbo car, which is why it's so widespread.. And the rear end may be the ratio changer, in this case, as well. I do know the DCT's can be flashed to hold more torque, like DSG/S-tronic gearboxes can. Not sure if the same method applied to a torque converter gearbox, though..
I have very little background with ZF8's, but hoping to learn more as I'm considering adding the new M340i to join my 2, and that car is only available in 8AT/RWD..
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12-14-2017, 09:10 PM | #15 | |
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12-15-2017, 06:32 PM | #16 |
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That is great for the 4cyl gang, really good news, especially if you intend on modding or tracking. I would think being a shared block, sans 2 cylinders, that the bell housing and all should be the same. No different than the inline 4/5 cylinders or V6/V8's in the Audi's I've worked on in the past..
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