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How to upgrade front and rear brakes on a 2.0i using factory parts?

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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Pbondar

How to upgrade front and rear brakes on a 2.0i using factory parts?

Post by Pbondar » Mon Aug 07, 2017 7:46 pm

As the title suggests, how easy is to upgrade the brakes on a 2.0i using 2.8i or 3.0 or 3.5 factory parts?

And/or do any of those brakes cross relate to other BMWs...I'nm sure they must..

I don't feel that my 2.0i is underbraked but wanted to look at the options..

The brakes look puny when compared to a 3.5 or Z4M but feel strong..

Geeky questions are:

1) How does the load proportioning s/w cope with changes in brakes?

2) Any changes to servo's or anything else?

3) I assume the rear parking brake is a nighmare on Elm street in this context?

4) What happens if you just uprate the front?

mcbutler
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How to upgrade front and rear brakes on a 2.0i using factory parts?

Post by mcbutler » Sat Aug 12, 2017 2:48 pm

1. It wont know you have changed discs and pads and will continue to operate in the same manner.
2. Not essential
3. Nope
4. Probably a bad idea, you would upset braking balance.
Mark
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Smartbear
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How to upgrade front and rear brakes on a 2.0i using factory parts?

Post by Smartbear » Sat Aug 12, 2017 3:35 pm

mcbutler wrote: Sat Aug 12, 2017 2:48 pm 1. It wont know you have changed discs and pads and will continue to operate in the same manner.
2. Not essential
3. Nope
4. Probably a bad idea, you would upset braking balance.
I understood it was the front brakes only that were larger on the 28i with the rears staying the same? :?
Rob
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e89 Sdrive 30i, this ones busted, pass me another...
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road warrior
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How to upgrade front and rear brakes on a 2.0i using factory parts?

Post by road warrior » Tue Jul 03, 2018 8:01 pm

i disagree, my 2.0 brakes feel adequate, but not reassuring, and i am more than curious how easy/costly it is to upgrade to the larger 2.5/3.0 brakes
If you ever think I'm off my rocker.. Just put me back in it and walk away... It's the kindest thing
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.

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How to upgrade front and rear brakes on a 2.0i using factory parts?

Post by Smartbear » Tue Jul 03, 2018 8:07 pm

road warrior wrote: Tue Jul 03, 2018 8:01 pm i disagree, my 2.0 brakes feel adequate, but not reassuring, and i am more than curious how easy/costly it is to upgrade to the larger 2.5/3.0 brakes
Different car, we’re talking 2litre turbo e89 here :thumbsup:
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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road warrior
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How to upgrade front and rear brakes on a 2.0i using factory parts?

Post by road warrior » Thu Jul 05, 2018 9:44 am

Sorry, I jumped in and maybe confused the issue, I have a stock 2.0 with what I feel are barely adequate and would like to upgrade to what the big boys have on the 2.5/3.0 and I'm assuming it's a bolt on job am I right? So where do I go for bigger disks and calipers assuming that's the case, is there anybody with some lying around after their own upgrade maybe? :driving:
If you ever think I'm off my rocker.. Just put me back in it and walk away... It's the kindest thing
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.

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