Big Brake Upgrades via the BMW G series catalog

[S2gizzle]

yea that would be great, thanks!

Razorlab, it looks like the minimum barrel diameter would be 17.6". Hopefully this helps.

Sponsored

 

[razorlab]

Razorlab, it looks like the minimum barrel diameter would be 17.6". Hopefully this helps.

Thanks. I'll do some measurements.

 

[steven_rosario]

What happen with the thread?

 

[razorlab]

What happen with the thread?

I tried some other 18's, didn't fit. Deal breaker for me.

 

[AZ Zupra]

I've got a set of adapters and all the brake parts on hand. Just waiting for it to not be 110 degrees out here in phoenix. ? Found the whole set of calipers, pads and rotors off a 7k mile wrecked G82!

 

[cpunlamd]

Love this thread. For people like me, intending on keeping the factory 19s with spacers. Can someone please list what’s needed for the 380mm upgrade?

 

[AZ Zupra]

Love this thread. For people like me, intending on keeping the factory 19s with spacers. Can someone please list what’s needed for the 380mm upgrade?

You’ll need the caliper/pads/rotors from one of the G8X M vehicles. I used parts from a wrecked M4 Comp. With the provided adapters the brake parts just bolt right up. One of the easiest mods I’ve ever done. You may want to buy new hardware from the dealer. I picked up a set of new G8X caliper mount studs as my brake parts didn’t come with them.

 

[DC5UPRA]

You’ll need the caliper/pads/rotors from one of the G8X M vehicles. I used parts from a wrecked M4 Comp. With the provided adapters the brake parts just bolt right up. One of the easiest mods I’ve over done. You may want to buy new hardware from the dealer. I picked up a set of new G8X caliper mount studs as my brake parts didn’t come with them.

Dexter?

 

[AZ Zupra]

Dexter?

This was for Halloween. I dress the Supra up like a mustang leaving a car show.

 

[Lorre]

You’ll need the caliper/pads/rotors from one of the G8X M vehicles. I used parts from a wrecked M4 Comp. With the provided adapters the brake parts just bolt right up. One of the easiest mods I’ve ever done. You may want to buy new hardware from the dealer. I picked up a set of new G8X caliper mount studs as my brake parts didn’t come with them.

Did you do the rears as well? Any changs to the master cylinder?

How does the brake feel in comparison? And is there a need to program anything? ABS module etc...

 

[AZ Zupra]

Did you do the rears as well? Any changs to the master cylinder?

How does the brake feel in comparison? And is there a need to program anything? ABS module etc...

I haven't done anything with the rears. On the new G8X cars the rear brakes are basically the same as the Supra. Dinky little single piston calipers that are little more than a parking brake. I didn't change the master cylinder or do any programming either, just a brake part swap and a brake bleed. The only noticeable difference I've felt is maybe a slightly more touchy braking experience at really low speeds like rolling forward at a stop sign or into a parking spot. They definitely dissipate heat better though. In situations where I've expected to smell the brakes I haven't with this new setup. The stock M4C pads I'm using are dusty AF though.

 

[razorlab]

I haven't done anything with the rears. On the new G8X cars the rear brakes are basically the same as the Supra. Dinky little single piston calipers that are little more than a parking brake.

That's actually not correct. The rear calipers and rotors are larger on the G8X. Rotors are 370mm vs our 345mm. (First post in this thread shows the differences)

They do still use a single piston calipers though, just larger.

 

[ricard_jdm]

You’ll need the caliper/pads/rotors from one of the G8X M vehicles. I used parts from a wrecked M4 Comp. With the provided adapters the brake parts just bolt right up. One of the easiest mods I’ve ever done. You may want to buy new hardware from the dealer. I picked up a set of new G8X caliper mount studs as my brake parts didn’t come with them.

Can you please explain more on the adapters. Did you use the adapters from the M4 or you bought other ones?

 

[razorlab]

Can you please explain more on the adapters. Did you use the adapters from the M4 or you bought other ones?

All the info is earlier in this thread.

 

[AZ Zupra]

Can you please explain more on the adapters. Did you use the adapters from the M4 or you bought other ones?

Can you please explain more on the adapters. Did you use the adapters from the M4 or you bought other ones?

The adapters are made by S2Gizzle. They’re just machined pieces of aluminum that bolt to the Supra hub and accept the M calipers.

Sponsored