[e90pilot]

Just wanted to chime in here. Lots of good info regarding the brake shoe. As for the rotor, you guys don't need to get too fancy. There's already one that first the performance brake caliper (135 caliper) perfectly. Just look for the BMW performance rotor for e90 330i, e91 328, or e93 328. The offset is perfect but the hand brake diameter is the larger 180mm. That's what those cars I listed have in common. And I'd be interested for sure for a set of modified brake shoes. I actually have the parts ready to go.

[essex_lad]

Well once my car is out of repair I can crack on with it.

[vtbandit]

Any updates on the parking brake modification?

[essex_lad]

cars in at bmw at the mo so sadly I havnt been able to do it.

[Sparkee]

The other way of looking at this is that the 335i rotor is the problem. Maybe custom built rotors? Anybody ever looked into having a rotor made with the proper diameters, offsets, and thicknesses to fit a non-335i E90 using 335i calipers while keeping the non-335i e-brake hub/shoes? Or is that impossible to do?

[essex_lad]

Originally Posted by Sparkee

The other way of looking at this is that the 335i rotor is the problem. Maybe custom built rotors? Anybody ever looked into having a rotor made with the proper diameters, offsets, and thicknesses to fit a non-335i E90 using 335i calipers while keeping the non-335i e-brake hub/shoes? Or is that impossible to do?

It will be the same situation. The drum of the disk would need to be bigger or you will have a large part of brake surface area which wont get touched by the pad, not to mention the cost involved.

[e90pilot]

Originally Posted by Sparkee

The other way of looking at this is that the 335i rotor is the problem. Maybe custom built rotors? Anybody ever looked into having a rotor made with the proper diameters, offsets, and thicknesses to fit a non-335i E90 using 335i calipers while keeping the non-335i e-brake hub/shoes? Or is that impossible to do?

Already looking into custom rotors. They can be made but they would be expensive and you would need a large enough order for someone to even consider making them.

[vwetish]

Originally Posted by e90pilot

Already looking into custom rotors. They can be made but they would be expensive and you would need a large enough order for someone to even consider making them.

You can make one yourself. Not expensive. Just need to buy different rotors and modify them.
This is to keep the smaller 165mm parking brakes shoes. I have address the solution here:

http://www.e90post.com/forums/showth...1083828&page=2

[essex_lad]

So I finally done it guys. Check my thread.

http://www.e90post.com/forums/showth...1052788&page=2

[essex_lad]

Originally Posted by andrey_gta

i still am.
Hopefully we can estimate cost & shipping

I assume the buyer covers two sets of OEM equivalent shoes at least?
34416761292 - 335i 185mm size
34416761291 - 325i 165mm small size

Did you end up fitting your 335 rears?

I managed to get mine done last week and everything is working spot on.

[andrey_gta]

Originally Posted by essex_lad

Did you end up fitting your 335 rears?

I managed to get mine done last week and everything is working spot on.

Soon. I just had the franken-handbrake shoes welded

[The HACK]

OMG you guys crack me up. The solution is so damn simple and obvious.

machine a iron ring the width of the drum, with inner diameter matching the inner diameter of the 325i drum, and outer diameter SLIGHTLY larger than the inner diameter (like 1/2mm) of the 335i drum. Heat the 335i rotor hub on a bench with a torch, press fit the iron ring into the hub.

DONE. All the 335i brake hardware will now bolt onto the 325i hub and retain parking brake functionality.

Why are you guys trying to fit a square peg into a round hole?

[avocet]

Originally Posted by The HACK

OMG you guys crack me up. The solution is so damn simple and obvious.

machine a iron ring the width of the drum, with inner diameter matching the inner diameter of the 325i drum, and outer diameter SLIGHTLY larger than the inner diameter (like 1/2mm) of the 335i drum. Heat the 335i rotor hub on a bench with a torch, press fit the iron ring into the hub.

DONE. All the 335i brake hardware will now bolt onto the 325i hub and retain parking brake functionality.

Why are you guys trying to fit a square peg into a round hole?

That is an easier solution? Really?

I don't have a machine shop at my disposal. And I want my discs plug and play when time comes for replacement(they ARE a wear item...). Sure, parking brake shoes are a wear item, but I am not a drifter so they are going to last a long time... the shoes I removed had basically zero wear. I sure as hell ain't goinna pay a machine shop to do it! lol.

I was able to get my shoes cut, welded and installed in an afternoon. And 5 years later they are still working perfectly.

Seems very straight forward, simple and effective.

[essex_lad]

I agree that machining is not the way forward, being a metal fabricator I can tell you that the process and cost to machine this is far worse than the method I did and what others have suggested.

[The HACK]

Originally Posted by avocet

That is an easier solution? Really?

I don't have a machine shop at my disposal. And I want my discs plug and play when time comes for replacement(they ARE a wear item...). Sure, parking brake shoes are a wear item, but I am not a drifter so they are going to last a long time... the shoes I removed had basically zero wear. I sure as hell ain't goinna pay a machine shop to do it! lol.

I was able to get my shoes cut, welded and installed in an afternoon. And 5 years later they are still working perfectly.

Seems very straight forward, simple and effective.

You have NO idea what I'm talking about, do you?

[justpete]

Not nearly as straightforward as it would seem. Check out post #5:

http://www.practicalmachinist.com/vb...metals-161047/

Easier than working through the math anyway. Machining the ring is another problem altogether, depending on how accurate you would need the cylindricity, making the tolerance stackup pretty tight.

[avocet]

Originally Posted by The HACK

You have NO idea what I'm talking about, do you?

Apparently not.

[Fundguy1]

Parking brake as stated and rear only account for 20% of braking. You won't probably see any braking improvement.

[essex_lad]

Originally Posted by Fundguy1

Parking brake as stated and rear only account for 20% of braking. You won't probably see any braking improvement.

I have found that since fitting these my brakes are a lot better now and I can honestly say it's not just in my head.

[Fundguy1]

Originally Posted by essex_lad

I have found that since fitting these my brakes are a lot better now and I can honestly say it's not just in my head.

Just the rears? 335 vs 328?

[essex_lad]

Originally Posted by Fundguy1

Just the rears? 335 vs 328?

I fitted 335 fronts ages ago but i used to have 325 discs on the rear. Since i have fitted the 335 rears as well i must admit the brakes are much more responsive and dont seem to fade like before. Its probably a combination of the better discs and pads as well but there is defo a noticable difference.

[Fundguy1]

Surprised. I'll have to keep that in mind. I was contemplating going to 328 rear so I could do smaller wheels for drag tires. Maybe I'll just grind the 335 calipers. I can get to 16s doing that.