Question for all those that have AP brakes on their M3

[mat205125]

These brakes really are the best modification that I have ever done to a car. They are so much better than the standard items, and can withstand endless laps on the track without a grumble ..... BUT

I instantly adjusted to their nature, and their power, by modulating the inputs to the pedal, however when the GF uses the car (or anyone else for that matter), braking can be alarmingly sharp. I must admit that I struggle in stop/start traffic.

Is there any way to alter the amount of servo assistance for a less "immediate" braking application, without reducing the ultimate power of the brakes?

Has anyone else with APs had similar experiences?

[Beedub]

put up some pics mat, i need some for my z4mr!!

[mat205125]

Some pics here

http://www.pistonheads.com/gassing/topic.asp?h=0&a... E46 BMW M3 SMG&mid=65677

Definitely recommend for your Mister Z4

[Beedub]

mat i love them!! i want them!! where did you buy yours from and how much so i know im not being fleeced?? im always worred with aftermarket brakes the parts will be difficult to find or the abs wont work correctly, can you confirm all is well??

my next mod really needs to be a BBK, i dont know how well my CSL ones will hold up to 450bhp, admitted on the stock car i found them pretty awesome.

[mat205125]

It'll sicken you to hear that I got mine at a massive bargain knockdown price. A friend of mine works in a local main agent that has a BMW franchise as part of their portfolio. They took a CSL in with these brakes fitted, however the discs were trashed. I got all four calipers, hoses, brackets and fixings for £500 - sadly they binned the bells when they binned the rotors. With a bit of window shopping, I was able to buy the bells, rotors and fixings for about £700 IIRC. Plus a few sundrys, I had the AP brakes fitted to both ends of my car for less than £1300.

I'd highly recommend these guys for all your braking needs, but would also keep your eyes peeled in the classifieds for AP brake kits / calipers, even if it means you'll need to write a shopping list for other parts. The 5575 calipers are common across formula brake conversions for many cars / applications.

http://www.bgdevelopments.co.uk/

Any answer on my original question anyone??

[mat205125]

Forgot to mention, that I got nearly £300 back off of ebay for my old discs and calipers.

[dan101smith]

You could try a different pad compound perhaps?

Otherwise, I think the answer is to tell people not to press the pedal so firmly.

[Beedub]

cheers mat, ill keep my eyes peeled in the classifieds. !!

[Jake.]

mat205125 said:

Has anyone else with APs had similar experiences?

Yep, exactly the same experience. My missus rarely drives my m3 but she always forgets how powerful the 6 pot APs are and nearly throws me through the windscreen the first time she touches the middle peddle. She's fine after that though.
When I drive the car I don't even notice it now, it just seems normal.

I've never really looked into 'solving the problem' as it's not a big deal for me because I drive 99% of time. Not much help, sorry.

[ferrisbueller]

mat205125 said:

Forgot to mention, that I got nearly £300 back off of ebay for my old discs and calipers.

Wouldn't you be better off keeping them for refitting prior to selling the car and then selling the APs?

[mat205125]

ferrisbueller said:

mat205125 said:

Forgot to mention, that I got nearly £300 back off of ebay for my old discs and calipers.

Wouldn't you be better off keeping them for refitting prior to selling the car and then selling the APs?

It was an option I'd considered, but replenishing the fun funds was a priority (those old brakes paid for a day out at Cadwell Park), and I've a lot more plans for my car in the future than will mean it will never be "factory" again