Agree with everything you said and a friend of mine had a GT3 and swapped out the carbon ceramics for the exact reasons you mentioned. He then swapped/sold his GT3 because it cost too much to race so now he races spec BMW 3 series cars.

Did you get CCBs on your car?

 

There is a company making CFRC type rotors now to replace CCBs that are far stronger and will not burn out of weight spec. I'm debating a set of those vs stock CCBs for my car, on one hand the stock units are a known factor and match the car but the modern ones can actually be used hard without fear.

In both cases they eliminate dust and greatly reduce unsprung mass/rotational inertia give both more effective power, a better ride, and faster reacting wheels. It's also easy in my case to tell the car to use the CCB brake profile and suspension setting since they were a factory option.

CCBs need to have the system occasionally wipe the faces in rain and during first movement to prime them, air shock CDC control also needs to be aware of the lighter mass. You also need to be careful what you use to wash the car so you don't damage the disks and you need to be extremely cautious and use two wheel guides when servicing anything with them. I have foam guards for cars with CCBs and endless terror whenever I have one in.

You tap them and it's a $5000 mistake

https://redmistracing.com/surface-transform-brakes

 

Point is though the rotors themselves don’t warp, and low quality rotors are the ones that heat up unevenly and cause the high spots that create “warping”. If you have high quality rotors no matter how hot they get, they get hot evenly so you don’t get high spots.

 

It is just cheaply implemented. It’s like Toyota being like GM in the late 90s. I’d rather have a tasteful plastic as one giant piece with the speaker, integrated, than the new way they do it currently in the new RX.

 

Teslas are a pretty hot item here in Vegas. I see tons of them at work and I think they still have a status symbol image to them.

They're not my taste. When I eventually make the jump to EV's I'll probably go with a traditional automaker. Partly due to things I've heard about Tesla's quality, partly because I don't care for the styling, and partly because I'm not a fan of the guy in charge.

 

I did not. I thought about it, because the steel brakes dust horribly--wheels turn bronze less than 100 miles after being cleaned--but in the end decided I didn't want to pony up the $8500 on what was already a pretty expensive car.

 

I agree with that, I just don’t think they are necessary for a street car and they don’t make you stop shorter, but they do look cool and like you said, no brake dust.

 

So I had the X7 out last night and tried Sport plus mods which has all of the most aggressive settings. I can’t tell what gear it starts in in any mode because unless I put it in manual shift it shows D instead of the gear it’s in. I didn’t notice much of a difference when starting from a stop, at least enough to make a difference to me, but what I did notice and what I don’t like about it is the throttle response. Similar to comfort mode, I have to press the accelerator nearly half way down before I move, same with when I’m rolling. As someone said, it seems like it’s all about the way the car is tuned. The delay is annoying.

Also, driving around in Sport plus is annoying as well unless I am driving in a spirited manner which is why I set Sport Individual to everything sport except for the transmission.

 

I was in Vegas in late June and my Uber back to the airport was in a Tesla 3. I asked the driver how he liked the car. He said he had a few regrets, first and foremost of which was the fact that the panoramic glass roof made it challenging to keep the car cool inside during the hot Vegas summers. He was in process of sorting out a solution for that.

 

yup.

huh? i thought you said they don't warp.

when was the last time you heard of someone with actually warped rotors and not just pad deposits?

almost certainly just crappy old brake pads. but both pads and rotors have improved vastly in the half century since.

yup... i have NEVER had to replace rotors on a car, and have only had pads changed once. i must be very gentle on brakes.

once i had some shimmying when braking which due to all i'd heard i thought was 'warping' but the dealer 'resurfaced' (as in scraped the brake pad crap off) the rotors, and all was good.

In both cases they eliminate dust and greatly reduce unsprung mass/rotational inertia give both more effective power, a better ride, and faster reacting wheels. It's also easy in my case to tell the car to use the CCB brake profile and suspension setting since they were a factory option.[/quote]

*lighter* brake components are definitely a win for handling/ride, but for braking power, if one is not tracking regularly, a waste of money.

yup.

same boat.

 

https://www.crossdrilledrotors.ca/bl...-the-right-way

The one thing that is not mentioned here is that all metal expands when heated, if you have one piece rotors when you get heat into them all the metal including the hat expands. When the disk section expands radially it forces the hat to deform slightly and since something has to give it induces an increase in disk runout "outwards" and tends to lead to uneven contact and buildup near the outer rim of the disks.

That is why floating type rotors exist, they are immune to heat expansion induced runout changes that altered friction disk to pad contact. It's also why fixed calipers have an advantage in general, there is also a system that in each caliper piston gets its own mini pad. Generally as you move up in performance and price you see more and more of those features added to stop any thermal related inconsistencies with the ultimate being carbon.

So no disks can't really be warped in the sense most talk about but they can certainly be effected by heat. Multi piece rotors combined with fixed multi piston calipers and "finger" type pads help stop this and carbon totally stops it.

 

agreed, but again, unless one brakes like a lunatic on public roads... no issue.

 

Get ceramic pads. Night and day on my Mercedes.

Thats something that BMW has built into the throttle for some reason then, sounds like some kind of dead spot in the throttle.

What you could try is something like a Pedal Commander. I had one in my LS460L because the sport engine mode was linked to the suspension, I wanted comfort suspension but better throttle response. It worked great and you can tailor it to what you like with a lot of precision. Just plugs in to the OBD port.

Thats a throttle thing not a turbo vs NA thing.
"Warping" is the universally used term, most people think the metal actually warps though but it doesn't

Never, but "warping" is the industry used term for brake pedal pulsation that is caused by pad deposits.



You live in a flat place lol. In my Lexus cars I can warp rotors on one trip to WV if I wasn't careful. I never owned a Lexus where the OEM rotors weren't warped within 20k miles, then when replaced with aftermarket never an issue again.

Depends on the quality of the brakes, mountain driving etc.

For instance like I said before, one trip to WV and my Lexus cars would have warped rotors, and the rotors on the Pacifica would be warped if I didn't use engine braking. I warped a set of rotors on it just driving around one day with 4 people and 2 kids.

 

Yep, I'm going to replace them at some point with iSweep, once I get annoyed enough to spend ~$700 replacing pads that aren't worn. They have two varieties for my car, IS1500 ($620) which have the same bite as stock and basically zero dust, or IS2000 ($715) with significantly more bite than stock with dramatically less dust.

 

That is seriously one reason why I consider keeping my car. If I got a new S Class I would have to do the brake pads and tires (run flats) and the clear bra, so thats $4,000 worth of stuff to a brand new car, or I could spend that $4,000 on a warranty for the car I have.

The ceramic brake pads have increased my enjoyment of the car more than anything else I have done. It was so that driving it 3 miles made it look awful, and now it looks freshly washed after a week. I love a clean car and the brake dust actually made me less satisfied with the car.