F30 328i/Xi 330i/Xi & F32 428i/Xi 430i/Xi Brake Package Differences - Stock, M Sport, and M Performance

BMW offered two brake upgrades as options that used Brembo calipers in the front and rear. Larger rotors were also part of the package.

M Sport Brake option (code S2NHA)
Front: 340mm rotors, 4-piston Brembo caliper painted blue
Rear: 345mm rotors, 2-piston Brembo caliper painted blue
The M Sport brakes were a separate option (code S2NHA) available across all lines and option packages. In the US it was a $650 option. You could have a base 328i with no other options except M Sport Brake upgrade. The M Sport trim package (code P337A) was separate and had its own brake spec (see above). So you can have an M Sport 328i trim package but not have the M Sport brake upgrade. To get the larger M Sport brakes you had to select that option during the car's order process. The front calipers and rotors are the same spec as the stock F30 335i brakes. Even the rotors are the same part number. The rear calipers are a 2-piston Brembo which is the same kit used on the M Performance kits (see below). Front and rear calipers should be painted blue with an ///M logo. The pads in the M Sport option were an aggressive Euro-spec pad - they have a lot of feel and grab quickly but dust quite a lot and are prone to squealing noises when not driven aggressively. There are pad alternatives that are milder if you have the M Sport brakes and are not happy with them. The rear rotor is bigger than the front and we have not seen an explanation on why this is. It could be a bit of cost-saving on so BMW did not have to release and support a 328-only rear kit for what is likely a low volume option.

M Performance accessory upgrade
Front: 370mm rotors, 4-piston Brembo caliper (yellow/gold, orange, or red color)
Rear: 345mm rotors, 2-piston Brembo caliper (yellow/gold, orange, or red color)
The M Performance kit was available from the dealer as an accessory retrofit. You paid for it separately (over $2,000) and either the dealer or the pre-delivery center installed them. The front brakes are massive 370mm/14.5" in diameter and the rotors were dimpled and slotted. The rear rotors are 345mm/13.6" with a 2-piston Brembo caliper. The M Performance brake pads were actually milder than the M Sport brake upgrade pads. This was good for people who wanted the big brake look without the noise and touchy response of racing brakes. If were not a fan of them, the M Performance pads could be swapped out for the M Sport upgrade pads.

For more information on the 335i brakes, including detailed info on pads and rotors, visit our 335i brake FAQ by clicking here.