[iBoost335STi]

I have the front gold brembos off my 07 subaru and i was wondering if anyone knew if i could transfer them over to my 07 335i that i will be picking up wednesday.. not looking to swap rotors just yet.

Thank you, Paul.

[Mr. 5]

If anything, they might fit on the rear.
Most likely not the front. The 335 rotors are pretty big in the front.

[kevin@bavarianx]

You will need someone to machine you custom brackets to fit the calipers. STi Brembos are pretty small compared to the 335 brakes.

[iBoost335STi]

are 335 breaks 4 piston? would 135 breaks fit easier?

[kevin@bavarianx]

the 135 brakes would be an easier swap as they are 6 piston front and 2 piston rear. The 335 brakes should be a 1 piston i believe.

[biz77]

From one Subaru guy to another, why would you want to? Your Brembos can easily be sold to a WRX or Legacy GT owner. STi Brembos are ~ 1" smaller than the 335 front brakes. Stopping power is NOT dependent on the number of pistons in the caliper, but rather the piston area, pad sweep area and Mu (coef. of friction) of the pads being used. That said, monobloc calipers typically flex much less than a sliding caliper and as a result offer better pedal feel and modulation. Overall, neither a 135i or STi brembo would be an upgrade in stopping power to the front brakes on a 335.

[e90pilot]

Originally Posted by sales@bavarianx

the 135 brakes would be an easier swap as they are 6 piston front and 2 piston rear. The 335 brakes should be a 1 piston i believe.

Correct, all the non-M 3s are single piston floating caliper. 135s run a smaller diameter rotor but have solid calipers. Biz77 is also correct. If you were to go with 135 brakes you would need to upgrade the rotor and pad so something more aggressive. The slots on the BMW performance rotor help dissapate heat better as well. I've seen race cars with very little breaking area on the rotor. Although they are ligher, they operate at much higher speeds. The reason they can get away with small pad area is the fact that they don't really care how quiet or dusty they are. They also don't need them to work when they're cold. So they use really high heat capacity rotors and pads which work great at high temps but work poorly when they're cold and make a lot of noise. Not really a quality you want on a street car.

335s already have great stopping power thats repeatable on the track. Just the pedal feel is a little soft. You'll get about 60 hard applications before they fade completelely.

[Gavin@MMW]

Originally Posted by e90pilot

Correct, all the non-M 3s are single piston floating caliper. 135s run a smaller diameter rotor but have solid calipers. Biz77 is also correct. If you were to go with 135 brakes you would need to upgrade the rotor and pad so something more aggressive. The slots on the BMW performance rotor help dissapate heat better as well. I've seen race cars with very little breaking area on the rotor. Although they are ligher, they operate at much higher speeds. The reason they can get away with small pad area is the fact that they don't really care how quiet or dusty they are. They also don't need them to work when they're cold. So they use really high heat capacity rotors and pads which work great at high temps but work poorly when they're cold and make a lot of noise. Not really a quality you want on a street car.

335s already have great stopping power thats repeatable on the track. Just the pedal feel is a little soft. You'll get about 60 hard applications before they fade completelely.

And you get 6 with a nonsport 328 lol

Im adding the OEM 335 brakes to the car over the 135 kit

[e90pilot]

Originally Posted by Craven 328

And you get 6 with a nonsport 328 lol

Im adding the OEM 335 brakes to the car over the 135 kit

LOL! My 325 zsp didn't do too bad on the track. I did 5 20min sessions at Thunderhill and the pedal was soft but I still had good braking action. At least it's not a 370Z. Their sport package has HUGE brakes and they're AWFUL. The fade with just 2 hard applications. Car and Driver crashed one because it wouldn't stop.

I would go for the monoblock instead of the floating caliper, but that's just me.

[335isGuy]

You can also add a soild Pin in the floating caliper to give it less flex. A nice set of SS lines, pads and fuild. Done setup.

[iBoost335STi]

much appreciated guys

[mike-y]

Originally Posted by Craven 328

And you get 6 with a nonsport 328 lol

Im adding the OEM 335 brakes to the car over the 135 kit

if you are only getting 6 hard stops before fade, you need to change your brake fluid and pads.

[Gavin@MMW]

Originally Posted by mike-y

if you are only getting 6 hard stops before fade, you need to change your brake fluid and pads.

You are very right, but id rather upgrade because it looks better and performs better all around

[hun77777]

Originally Posted by biz77

From one Subaru guy to another, why would you want to? Your Brembos can easily be sold to a WRX or Legacy GT owner. STi Brembos are ~ 1" smaller than the 335 front brakes. Stopping power is NOT dependent on the number of pistons in the caliper, but rather the piston area, pad sweep area and Mu (coef. of friction) of the pads being used. That said, monobloc calipers typically flex much less than a sliding caliper and as a result offer better pedal feel and modulation. Overall, neither a 135i or STi brembo would be an upgrade in stopping power to the front brakes on a 335.

you probably made the one of the most insightful 1st post on e90post.com compare to most of people usually start with "hey where's the cheapest XXX i can get from?"