Thanks for your question, glad to provide what I have found on this technology:Kindly share the details of how the other "all manufacturer's" PTV systems work. If they do not use the brakes, how do they accomplish
power (read: torque) reduction to tires that are losing traction? I am most intrigued...
As advertisements for the National Enquirer used to state, "Inquiring minds want to know!!!"
Limited slip differential used to be a big deal in Porsche land . As recent as 2007 the only cars that had the traditional LSD were Gt cars and on a Turbo it was an option for 1K . That changed in I believe 2010 . I am surprised they are putting anything on a Macan . I don't know enough about the technicals to say whether a traditional axle lock works better or worse than a computerized brake assist but I do agree it can wear brakes more rapidly . Since I was one of the first to get a Macan (ordered pre launch ) even my service advisor was surprised at the time when my rear brakes wore before the fronts . It is true that my current Macan Turbo which I bought off the lot lacks the PTV but I dont think it would support having almost double the mileage on original brakes with the same driver (wife) .A more direct comparison would come after she takes delivery of the new GTS which will have PTV.Thanks for your question, glad to provide what I have found on this technology:
Torque vectoring explained
Differentials are key to ensuring grip in tricky situations. Torque vectoring builds on this by further improving steering and cornering performance.www.carexpert.com.au
Consider the paragraph on brake-based systems. This is what Porsche sells us for a fortune:
Brake-based torque vectoring
Brake-based torque vectoring is a less sophisticated system that attempts to replicate the capabilities of the mechanical system above through simpler, cheaper means. Rather than torque being shuffled through a differential, this system momentarily applies the brake to one of the wheels (e.g. the inside wheel in a turn).
The article was from 2013 . Its 10 years later and I wonder what upgrades were made to it . I sure know things like PDK have changed over time despite being the same basic mechanism . The Macan is not cited in the article as it had not been launched until a year later .
Good point.
Not necessarily. Pulsation typically means the rotor isn't true, i.e. it has some level of undulations or warping as some people call it. Like a Pringle potato chip. A rotor a can be perfectly true but not flat, think of drilled rotors for instance. They don't generate pulsations because what the pad sees is an average surface which is perfectly true, despite local non-flat zones (the drilled holes).
I have the same "blemishes" on mine (maybe a little less than yours) but after 6K miles (but I recall noticing them day 1 when I picked up). I didn't care too much un till today when I saw a Cayenne parked next to me (older gen) with PSCB - white brakes, but the mirror finish was perfect. I am due for 1 yr service in a month. I will be brining this up. Not keen on replacing these anytime soon...
Please let me know what you find out. Mine still look the same as in the photo and the passenger side rear has started to occasionally squeal st low speeds. I’m now at 20000km And also plan to bring it up at my next service.
Mine do not squeal and the brake feel is great. It is cosmetic issue for me (and only if considered abnormal by Porsche) - i'd like to get it on record either way.
It's relatively easy to measure rotor wear. You can get a rough idea visually by checking the lip on the outer edge of the rotor, or take to it with a measuring tool for more accuracy. Wear varies considerably according to style of driving so it's better to go with a measurement than a set period of time or distance.
While this may be true of conventional rotors, the PSCBs are incredibly hard because of that tungsten carbide coating which is only a 100 microns thick to start with. It is therefore impossible to ascertain its remaining thickness by just looking at the surface. A high accuracy implement must be used, such as a micrometer.
I'm 99.99% positive. This option was not region specific. PSCBs were introduced on the Cayenne and possibly the Panamera as well in 2018. I have a 2018 GTS that I ordered to spec so I was very familiar with the options back then and PSCBs were not available on the Macan. Even PCCBs were only available on the GTS and Turbo.
Yes, I get that but my impression was that porschelover was talking about non PSCB rotors when he mentioned rotors that rust. PSCB rotors don't rust.
Volcano Grey....and I had the wheels off to clean them and if the calipers had been repainted, it was a perfect job. Could you option white calipers back then ?
No, there is no way to option just white calipers then or now. Porsche made one known exception for one particularly ultra wealth Porsche collector who has nearly every top performance Porsche sports car in all white. Repainting calipers is a relatively very simple thing to do correctly.
