Racing Brake 380/380 Kit

[mikerunt]

Has anyone looked at or had experience with the Racing Brake 380/380 kit that retains the OEM GTS calipers?

https://racingbrake.com/bmw-irp-380-380/

[SYT_Shadow]

Hadn't seen this, but hard to choose this over the girodisc conversion that has a 400mm front rotor

Running 19" wheels doesn't bother me enough to go to a smaller rotor with the same caliper.

On gts1 and gts2, we run the alcon 380mm front and rear kit that allows a 18" wheel, but the caliper is better than the oem one.

The oem setup is good, we've run it with girodisc and they take any amount of punishment.

[markw10702]

Girodisc is less expensive, and race proven. $1,400 front and $1,300 rear.

https://girodisc.com/finder/?pfresul...All&f_axle=All

[mikerunt]

Girodisc 400/380 is the other kit i was looking at as well - but wanted to get 380/380 feedback with the OEM because i hadn't seen that either.

on 19s - wondering 19x11 squared is a setup that will work? with the right backspace and spacers in front?

[SYT_Shadow]

Originally Posted by mikerunt

Girodisc 400/380 is the other kit i was looking at as well - but wanted to get 380/380 feedback with the OEM because i hadn't seen that either.

on 19s - wondering 19x11 squared is a setup that will work? with the right backspace and spacers in front?

I don't know if 11 square works on the gts. Ran 10.5 et45 square and it worked great

[Track/S]

Originally Posted by mikerunt

Has anyone looked at or had experience with the Racing Brake 380/380 kit that retains the OEM GTS calipers?

https://racingbrake.com/bmw-irp-380-380/

Paragonbrakes can provide 380x36mm for 1200$, you need adapter for front calipers.

I am going to buy these discs for a client and I will made the adapters.

[mikerunt]

Originally Posted by Track/S

Paragonbrakes can provide 380x36mm for 1200$, you need adapter for front calipers.

I am going to buy these discs for a client and I will made the adapters.

do you know who makes a caliper adapter or does one need to be machined?

[mikerunt]

Originally Posted by SYT_Shadow

I don't know if 11 square works on the gts. Ran 10.5 et45 square and it worked great

Did you have to run spacers in the front or rear?

What tires did you run if you don’t mind me asking.

[SYT_Shadow]

Originally Posted by mikerunt

Did you have to run spacers in the front or rear?

What tires did you run if you don’t mind me asking.

295/30 Hoosier r7

You need a front 15mm spacer. Any square fitment on the f8x means spacers up front due to the offset of the front to rear fitment

[Track/S]

Originally Posted by mikerunt

do you know who makes a caliper adapter or does one need to be machined?

I will machine them, if you want I can make you 2 units.
I run with 12mm spacers on front with 295/30, and there is still room to use a 5mm one.


With 12mm spacer:

[mikerunt]

Originally Posted by Track/S

I will machine them, if you want I can make you 2 units.
I run with 12mm spacers on front with 295/30, and there is still room to use a 5mm one.


With 12mm spacer:

[img]https://i.ibb.co/pdJJ4BM/20230324-170738.jpg[/img]

Appreciate that - let me get my plans sorted and I’ll reach out!