[Boostedphil698]

So,

I managed to secure one of the last yellow m performance brake kits in the U.S. and my dealer is holding it for when I come in for the install in September. Here's what they'll look like after install. Thoughts[IMG]undefined[/IMG]?!

[Logicoeur]

Dealer? You paid way too much money lol. But for the color I suppose it evens out so what

Used calipers - ~$1K USD
4 Rotors - ~$500 USD Zimmerman 2 piece
Powder coat yellow - $2-400 USD
Install - (diy $0 - $3-500 indie)

Estimate $1700 - 2500

____________

Dealer parts ~$2400 USD
Dealer labor??????

Estimate ~$2400 just for parts.

[Stlblues]

Originally Posted by 435i_Phil

So,

I managed to secure one of the last yellow m performance brake kits in the U.S. and my dealer is holding it for when I come in for the install in September. Here's what they'll look like after install. Thoughts[IMG]undefined[/IMG]?!

They are discontinuing the M Performance brake kits?

[imperfectluck]

I could imagine that they aren't making anymore since the the F3x platform is almost EOL with the F33 I believe still being made present day so makes sense that inventory would be running low but I'd imagine most don't normally spring for the m perf brakes.

Curious to see if / when they do run lower on stock if they'd do a sale on them similar to the 335/435i LSD sale a while back. I wouldn't mind picking up another set of orange calipers before they're gone.

[jv004]

My thoughts are that you need a better pic...smh.

[Boostedphil698]

Originally Posted by Logicoeur

Dealer? You paid way too much money lol. But for the color I suppose it evens out so what

Used calipers - ~$1K USD
4 Rotors - ~$500 USD Zimmerman 2 piece
Powder coat yellow - $2-400 USD
Install - (diy $0 - $3-500 indie)

Estimate $1700 - 2500

____________

Dealer parts ~$2400 USD
Dealer labor??????

Estimate ~$2400 just for parts.

M Performance brakes need to be coded. I also don't want a used kit, that's the cheap way imo.

[Boostedphil698]

Originally Posted by Stlblues

They are discontinuing the M Performance brake kits?

The status is unknown tbh.

[Logicoeur]

Originally Posted by 435i_Phil

M Performance brakes need to be coded. I also don't want a used kit, that's the cheap way imo.

No coding needed as you already have brembo fronts. The coding is for brake bias. This has been documented plenty of times. Coding is needed if you are coming from the base brakes (28i, 20i) engines. Spending more money than necessary doesn't make it any more performant or cooler, but ok.

[Boostedphil698]

Originally Posted by Logicoeur

No coding needed as you already have brembo fronts. The coding is for brake bias. This has been documented plenty of times. Coding is needed if you are coming from the base brakes (28i, 20i) engines. Spending more money than necessary doesn't make it any more performant or cooler, but ok.

I have confirmed from a BMW tech that you need to code the brakes. The 4 piston's I have now are not the same for the M Performance kit. The fronts are bigger thus the 370mm rotors and the rears are bigger because you go from a 1 piston single caliper to a 2 piston fixed.

[Logicoeur]

Originally Posted by 435i_Phil

I have confirmed from a BMW tech that you need to code the brakes. The 4 piston's I have now are not the same for the M Performance kit. The fronts are bigger thus the 370mm rotors and the rears are bigger because you go from a 1 piston single caliper to a 2 piston fixed.

He's fleecing you. No coding needed. Search the forums many people have gone through this already. It's the exact same caliper and pistons on the front, hence the swappable pads. Just the integrated mounting bracket is a bit longer. N55/B58 already have the coding because of that.

[Boostedphil698]

Originally Posted by Logicoeur

He's fleecing you. No coding needed. Search the forums many people have gone through this already. It's the exact same caliper and pistons on the front, hence the swappable pads. Just the integrated mounting bracket is a bit longer. N55/B58 already have the coding because of that.

Dealer quoted me $500 for labor and 2100 for the kit and $400 something for the rear rotors. Why wouldn't I take the coding? An indy shop would charge me $500 and not code them. I disagree with not having to code them. Every dealer I contacted said they need to be coded and is included with the labor which was between $500-$800.

[Logicoeur]

Just make sure they aren't charging you individual hours for the coding. You'd be paying for something you already have. If it's time charged in parallel for mounting the kit then you are fine.

[Boostedphil698]

Originally Posted by Logicoeur

Just make sure they aren't charging you individual hours for the coding. You'd be paying for something you already have. If it's time charged in parallel for mounting the kit then you are fine.

Yeah coding is included. But, here is a forum started by BMW DIY Guy and it seems that the coding ensures proper pedal feel and DSC function. You need more fluid with more or bigger pistons and I hate mushy pedal feel.
https://f30.bimmerpost.com/forums/sh...+Brakes+coding

[Onizukachan]

The coding is for the bias on the rear brakes.
I went 312/300 to 340/330 and didn’t need it, and got enough (95+%) of the Possible improvement that the tires are Absolutely the limiting factor now.
OP, they are brakes, nothing wrong with yellow or new. Your car and not everyone has the same comfort level on DIY and used parts. If you have 312/300 upgrade For safety, if you have 340/330 it’s really for looks.


I’m super happy with used Calipers and Drilled and slotted rotors for under 1k whilst painting my own. Don’t need the 370/345 for performance nor looks, got that already.
Mine are purple in the sun and black violet in the shade. Really happy with them.

[Boostedphil698]

Originally Posted by Onizukachan

The coding is for the bias on the rear brakes.
I went 312/300 to 340/330 and didn’t need it, and got enough (95+%) of the Possible improvement that the tires are Absolutely the limiting factor now.
OP, they are brakes, nothing wrong with yellow or new. Your car and not everyone has the same comfort level on DIY and used parts. If you have 312/300 upgrade For safety, if you have 340/330 it’s really for looks.


I’m super happy with used Calipers and Drilled and slotted rotors for under 1k whilst painting my own. Don’t need the 370/345 for performance nor looks, got that already.
Mine are purple in the sun and black violet in the shade. Really happy with them.

I ended up having the whole thing done at the dealer and everything works as it should. There is definitely a difference between the stock 435i setup vs. the M Performance kit.

[SD Convert]

Originally Posted by Logicoeur

No coding needed as you already have brembo fronts. The coding is for brake bias. This has been documented plenty of times. Coding is needed if you are coming from the base brakes (28i, 20i) engines. Spending more money than necessary doesn't make it any more performant or cooler, but ok.

My 430i also had 312/300 brakes and needed to be recoded. Without the code change, it felt like the front brakes weren't doing anything.

Originally Posted by 435i_Phil

I have confirmed from a BMW tech that you need to code the brakes. The 4 piston's I have now are not the same for the M Performance kit. The fronts are bigger thus the 370mm rotors and the rears are bigger because you go from a 1 piston single caliper to a 2 piston fixed.

The number of pistons makes no difference. The important part is the ratio of piston area. If the ratio stays similar, no recoding is needed. If there's a significant change in the ratio, the brakes need to be recoded to correct the front/rear bias.

The 4-piston fronts have 4x40mm pistons (equivalent area to a single 80mm piston). The 2-piston rears have 2x44mm pistons (equivalent area to a single 62mm piston).

Originally Posted by Onizukachan

If you have 312/300 upgrade For safety, if you have 340/330 it’s really for looks.

I upgraded from 312/300 to 370/345. The cost was only a bit more than to go to 340/330, and the labor was the same ($0 + coding). Also, the pad replacement in the dual/quad piston caliper is much easier than with the 1-piston caliper.

[Logicoeur]

Originally Posted by SD Convert

My 430i also had 312/300 brakes and needed to be recoded. Without the code change, it felt like the front brakes weren't doing anything.

The number of pistons makes no difference. The important part is the ratio of piston area. If the ratio stays similar, no recoding is needed. If there's a significant change in the ratio, the brakes need to be recoded to correct the front/rear bias.

The 4-piston fronts have 4x40mm pistons (equivalent area to a single 80mm piston). The 2-piston rears have 2x44mm pistons (equivalent area to a single 62mm piston).

I upgraded from 312/300 to 370/345. The cost was only a bit more than to go to 340/330, and the labor was the same ($0 + coding). Also, the pad replacement in the dual/quad piston caliper is much easier than with the 1-piston caliper.

Op has a 435 which already has 340m Brembos in the front

[Onizukachan]

Originally Posted by SD Convert

I upgraded from 312/300 to 370/345. The cost was only a bit more than to go to 340/330, and the labor was the same ($0 + coding). Also, the pad replacement in the dual/quad piston caliper is much easier than with the 1-piston caliper.

You got a great deal! I paid $800 for pads calipers and rotors.

I wouldn’t say easier, jsut different. I can change single pistons in about 2 minutes tops once the wheel is off, if that, bc it’s easier to retract pistons with a big c clamp and unscrew the two Allen’s than to spread multiple pistons with a special tool and pull pins then fit them again.
Neither is hard but the single pistons are much easier.
My wife can change single pistons in about 4 minutes herself. Brembos... not a chance.

[SD Convert]

Originally Posted by Onizukachan

You got a great deal!

I did the work myself. Not really a "deal", but it makes sure I understand the system better.

Originally Posted by Onizukachan

I can change single pistons in about 2 minutes tops once the wheel is off, if that, bc it’s easier to retract pistons with a big c clamp and unscrew the two Allen’s than to spread multiple pistons with a special tool and pull pins then fit them again.

Interesting. I thought the single-piston calipers needed to be removed to replace the pads, or is that the two allen screws you mentioned?

FYI, all pistons in a caliper can be compressed at the same time by spreading the pads. The "special tool" is actually quite common and fairly inexpensive. A set of pin punches helps to pull the pins.

[johnung]

Originally Posted by 435i_Phil

I have confirmed from a BMW tech that you need to code the brakes. The 4 piston's I have now are not the same for the M Performance kit. The fronts are bigger thus the 370mm rotors and the rears are bigger because you go from a 1 piston single caliper to a 2 piston fixed.

FYI- for anyone reading this in the future. The BMW Tech was just reading the instructions that is included with the M Performance Brake Kit.

Rather than explain that some cars will not need coding because they have that same brake bias code that came stock, the instructions just have an instruction to code all new kits during installation.

The front Brembo 4-piston calipers come in two sizes that fit over either 340mm x 30mm rotors or over 370mm x 30mm. Those calipers have the same pistons, seals, dust caps, pins and clips. They even take the exact same front brake pads.

But they are NOT interchangeable. Their castings are difficult. The casting of the 370mm caliper is stretched out by an additional 15mm to fit over a 370mm rotor rather than a 340mm rotor. See photo. The 340 Caliper has raised lettering on the back of the casting that says "340". The 370 caliper says "370/380".