School me on e36m3 rotors and calipers on e30m3 struts.

[Mr. Horsepower]

so is this the equivalent of running 12mm spacers behind the wheel on the front? wouldnt that make up for clearance issues of wheel to caliper?

That is correct. Every wheel you are using need to substract 12.8mm on the offset. I have been using this setup for 2011, 2012, 2013 and 2014 season without any problems at all. I have tracked the car pretty hard.

Now I'm going another route with custom ackermannarms with zero degree angle, that makes me able to mount the E36M3 disc direct onto the hub and make some custom brackets for a 4 pot caliper. Stop Tech or so.

In order to get BBS RC090 on I had to grind a bit on the calipers as seen here:



With RC090 (Style5) on the car. Offset is then ET7.2 at front. As seen here with Yokohama Advan A048-R 215/45-17 tires.

[BlackbirdM3]

Just out of curiosity, what's the point? Both are single piston calipers. Brake pads are going to be about the same price, what are you gaining? If I were to do a brake upgrade, I'd make sure I had at least a two if not 4 or more piston caliper on there that was lighter than stock.

Will

[markseven]

FWIW E38 Style 5s will hit the rattle clip on stock E30 M3 calipers, so I presume they would need a spacer to clear E36 cali's.

[Todd Black 88]

Not sure I am reading your question correctly, but the 12.8 mm spacer goes behind the rotor, on the hub, to space the high offset rotor outwards to keep from fouling the strut and knuckle, and to get the rotor centered in the calipers location mounted on the e30 m3 strut.

It doesn't change anything as to the caliper contacting the rear of flat spoked wheels.

[golde30]

so is this the equivalent of running 12mm spacers behind the wheel on the front? wouldnt that make up for clearance issues of wheel to caliper?

[e30austin]

Resurrection of an ancient thread. Anyone making these anymore?

[Mr. Horsepower]

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

[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?

[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:

[Mr. Horsepower]

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

[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]

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!

[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!!!

[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.

[Van Westervelt]

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