School me on e36m3 rotors and calipers on e30m3 struts.

[george graves]

So, I'm thinking about 5 lug. What options are there for e36 brakes on otherwise stock e30m3 fronts. I understand that you can put a spacer underneath the rotor. Who make them? And do you also need a spacer for the caliper?

Anyone running a set up? What's the skinny?

[rThor432]

A local motorsport shop (former employer) had a run of 20 or so sets of the spacers made that go under the rotor. They still have some set in stock. I'm stopping by tomorrow and I'll try to find out what they sell for. I know a couple of E30 M3 guys using those spacers and they work great. I can call a friend to see if anything else was needed when he did the "conversion", but iirc everything else bolts right up with the correct spacer in place.

[reelizmpro]

SBI used to sell them then stopped. Then another guy on S14 started making them...but I haven't heard anything about them lately. A major turnoff is the E36 high offset so a change of wheels may be needed. Otherwise, it's a nice factory style upgrade.

[Van Westervelt]

I made a few runs of the rotor spacers on here and s14. No spacing or adapters are needed for the calipers. As stated before, the drawback is needing higher offset wheels in 17". But if those two things fit, then youre golden.

Shoot me a PM if you want me to have another set made up.

[george graves]

What's the added offset that the spacer adds? My goal is to run 16" style 5's with e36 m3 brakes. Can I do that?

[Van Westervelt]

Wont clear the brakes unfortunately. 16" RS's will though iirc. The rotor spacers are 12.xx mm thick.

[psyber_0ptix]

16" style 5's wont fit? the 16x8's are et23 or so i thought, just like style 4's. Flat spoke on the back end. I'm running style 4's no prob over e36m3 calipers (is this the difference of using e30m3 vs e36m3 front suspension?)

i also have a set of style29 16x7's et20 winters that fit too


style 29 et20 16x7 (oversized tires, pre-snow tire installation)


style 4 et23 16x8




the spacers behind the rotor just centers the rotor into the caliper right? hopefully the calipers clear the inner well of the style 5's like it does these wheels.

I think the only interference would come from tire choice and fenders

i'm running some pretty screwy tire sizes which in the end i'm not all to happy about. 225 or 245/45 next time.

[prada88m3]

spacers

I made a few runs of the rotor spacers on here and s14. No spacing or adapters are needed for the calipers. As stated before, the drawback is needing higher offset wheels in 17". But if those two things fit, then youre golden.

Shoot me a PM if you want me to have another set made up.

I need a set!!!

[Mr. Horsepower]

I did this this spring to my E30M3. And before all of you ask me to make you a spacer I can say that all on the pictures are sold and that I might make another batch during the winter. Price will be about 1500NOK each set.

I use E36M3 calipers, spacers behind the disc (made myself) and Two piece Performance Friction discs. I have had stock E30M3 16" alloy wheels on with them, but I don't thing you can put on 16" split rims since the screws probably would touch the caliper.

I run 8.5x18" OZ Racing Mito's with ET21, and with that 12.8mm spacer behind the disc they sits just about perfect.
I have used them for about 8000km now and are very happy with it. I have been to the Nürburgring with them and everything is fine. I will fit the E36M3 rear brakes this winter. For that a bracket is needed, and in order to keep the e-brake mechanism I will make a ring that is going to be shrink into the inside of the disc or spot welded.

There are made from 6061-T6 alloy.

Here are some pictures!

[Jparkr]

^ any chance you can let me know the actual gap the spacers have to produce between the hub and the rotor. 12-13ish mm?

[Mr. Horsepower]

12.8mm, it is mentioned in the text I wrote as well :)

[Jparkr]

You sir, are a king or kings. Thank you for the information! I am too busy at the shop and didn't have the rotors yet to mock up and measure.

:bow:

[Roysneon]

This may be a stupid question but....is there enough metal at the mounting points that you could remove equal ammounts from the knuckle and caliper to make up for this and not have to worry about changing your front offset?

[Mr. Horsepower]

You can get a custom two piece disc with custom bells, not worth the hazzle though.

[e30austin]

Resurrection of an ancient thread. Anyone making these anymore?