Install of F80 M3/4 Front and Rear Brakes, SLG brackets, ER Brake Lines

[houtan]

Originally Posted by Ric in RVA

Only thing different is the take up portion.

Master cylinder diameter is the same....

Thanks you.
Can you please clarify what take up means? I think I know but not sure haha.

[Ric in RVA]

Originally Posted by houtan

Thanks you.
Can you please clarify what take up means? I think I know but not sure haha.

There is a chamber that is designed to move the pistons to the rotors.....this is take up......then a hole closes and it transitions to the actual brake cylinder.

The sport brakes/ m3/ etc all have faster take up portions in the MC.

moves the pistons much quicker to the surface of the rotor.....but they all have the same eventual MC diameter....

So they feel faster to brake and have a little less pedal travel than a base MC.

[houtan]

Originally Posted by Ric in RVA

There is a chamber that is designed to move the pistons to the rotors.....this is take up......then a hole closes and it transitions to the actual brake cylinder.

The sport brakes/ m3/ etc all have faster take up portions in the MC.

moves the pistons much quicker to the surface of the rotor.....but they all have the same eventual MC diameter....

So they feel faster to brake and have a little less pedal travel than a base MC.

Thank you!

In that case, I would definitely go with another 135i master cylinder. I like the amount of travel I have in the pedal when using the brakes.

[flinchy]

I'm really struggling with wheels now to fit my f8x brakes, my local wheel company (Koya) is telling me.none of their wheels will clear above +22 offset on the front and +27 rear

But it'll cost me literally twice as much to get a set of EC7, and take several months 😭

[houtan]

Bummer! Hopefully you can come across a used set.

[flinchy]

I'm also getting a TON of scraping no matter what I do from the rear rotors, I had to trim a ton off the park brake assembly backing plate as it was straight up touching the rotor, then that was fine.. but then I put the shoes on and *something* is scraping even with the shoes at minimum extension?

Originally Posted by houtan

Bummer! Hopefully you can come across a used set.

Me too 😭

I've found a few used sets but arranging someone to find a reasonable freight quote is another story

[houtan]

Originally Posted by flinchy

I'm also getting a TON of scraping no matter what I do from the rear rotors, I had to trim a ton off the park brake assembly backing plate as it was straight up touching the rotor, then that was fine.. but then I put the shoes on and *something* is scraping even with the shoes at minimum extension?


Me too 😭

I've found a few used sets but arranging someone to find a reasonable freight quote is another story

Just saw this post.

Did you ever figure this out?

[AshwinLB]

Originally Posted by LanceM26

I'm about to buy a second set of wheels that will clear according to communication with support.

https://www.superspeedwheels.com/flowform-rf03rr

I'll report back my findings.

18x8.5 et 35

Did you end up buying these and trying it out?

[ShocknAwe]

Originally Posted by houtan

Just saw this post.

Did you ever figure this out?

First I've heard of the problem. Wonder what's going on.

[DWN-N-OUT]

I know it's probably a long shot but has anyone test fit the ARC-8R's to confirm barrel clearance? I like the way the ARC's look on my car much better than the VS's and I'd be willing to try and source them if I knew they'd fit and I wouldn't have to shave my calipers down now that they've been powder coated.

[houtan]

Originally Posted by DWN-N-OUT

I know it's probably a long shot but has anyone test fit the ARC-8R's to confirm barrel clearance? I like the way the ARC's look on my car much better than the VS's and I'd be willing to try and source them if I knew they'd fit and I wouldn't have to shave my calipers down now that they've been powder coated.

Have you reached out or called Apex?

[DWN-N-OUT]

Originally Posted by houtan

Have you reached out or called Apex?

I sent them an email and am waiting on their response, I was just curious if anybody here has actually put them on and confirmed clearance.

[Expert@ApexWheels]

Originally Posted by DWN-N-OUT

I sent them an email and am waiting on their response, I was just curious if anybody here has actually put them on and confirmed clearance.

I just replied to your email, but the TLDR is that we don't make the ARC-8R anymore so being able to source a complete set is really unlikely. We also didn't produce a higher offset rear 18x9.5 ET58 in that design.

New ARC-8 styles are in the works and I can check clearances on those once we're further along in the process.

-Tom

[DWN-N-OUT]

Originally Posted by Expert@ApexWheels

I just replied to your email, but the TLDR is that we don't make the ARC-8R anymore so being able to source a complete set is really unlikely. We also didn't produce a higher offset rear 18x9.5 ET58 in that design.

New ARC-8 style are in the works and I can check clearances on those once we're further along in the process.

-Tom

Thanks again for the quick response and the information.