This picture shows the standard rear brake (335mm) clearance to the stock 18" wheel barrel, not a lot but it does clear.
As far as I know (with all researches), unlike the front brake, Tesla keeps the same rear brake for all model 3 regardless it's a base model or PUP.
This is an ONE piece cast iron rotor, not aluminum hat two piece rotor.
The tooling of casting can make wavy finish rotor hat so to create a visual difference from the base model, and perhaps let consumer feel it has "some" better cooling effect for it looks more sporty than a plain hat.
So this means they made a fake two-piece rotor? Why would Tesla say they're lightweight two-piece rotors? If true this is sort of lame.
That would be pretty cool. I just wish they would release specificsAfter looking at @b0n3z pictures of the rear calipers even more, I tried looking for brembo calipers that look similar.
It's interesting because from the outside view you can only see one piece. This is normally the case for fixed calipers with piston(s) in the inside and outside half, but it doesn't appear there is space for a piston in this case. That means it should be a sliding type caliper, but sliding type calipers typically have a fixed piece surrounding the sliding piece, similar to the AMG picture provided by @Warren-RB . This isn't the case for the performance upgrade rear caliper, which again only has one piece visible from the outside.
Anyway, I googled brembo calipers and found the following new product that brembo announced in April of last year.
Latest Brembo calipers are a lesson in lightweight packaging
It appears that this could be the technology used for these rear calipers with just a change in aesthetics. What do you guys think?
Looking forward to @b0n3z or someone with the performance upgrade brakes taking a wheel off and getting some pictures all around the calipers.
I hear ya. Now I wish I didn’t fuss with Tesla to add the PUP while honoring my old pricing.damn now i kinda want to go back to the base performance model and just get autopilot instead....if i only knew for sure i still get track mode on the standard P3D
So, @SD_Engnr 's first pic does look somewhat like the Brembo ECS calipers, which are used for the Alpine A110 rear brakes. You can see the black gearmotor and the hole for the hydraulic line in the same location as the performance upgrade calipers.
View attachment 325113
Something else interesting is it appears the Alpine A110 may be using these calipers in lieu of a mechanical differential.
If it turns out the performance upgrade brakes are similar, could these calipers be utilized for "track mode"?
Alpine A110: 1080kg sports car shown in production form – Geneva 2017
"There’s no mechanical limited slip diff, with Alpine opting for a brake-based e-diff. "
Alpine A110 (2018) review: simply the best
"A mechanical limited-slip differential isn’t included. Instead, the ESC-based braking helps to juggle torque between the rear wheels."