Cybertruck Performance Brakes coming soon? Spotted in Service Manual

[RayzorBEV]

With the latest updates, I noticed my Cyberbeast's regen has been detuned some what so I'm using my brakes more than before...?. Why can't Tesla offer adjustable regen ?

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[Gurule92]

With the latest updates, I noticed my Cyberbeast's regen has been detuned some what so I'm using my brakes more than before...?. Why can't Tesla offer adjustable regen ?

They used to. If I remember correctly, people kept doing range tests with low Regen turned on or something and getting bad numbers so, to avoid that, Tesla took the option away.

I could be totally making that up though. Was a while ago

 

[agordon117]

They used to. If I remember correctly, people kept doing range tests with low Regen turned on or something and getting bad numbers so, to avoid that, Tesla took the option away.

I could be totally making that up though. Was a while ago

It's not just that. The EPA forced this to happen with their new rules. You can only advertise range in the worst combination of efficiency for all settings. So low regen, no regen, and even "roll mode" have all been taken out, because they result in worse efficiency. Any manufacturer who doesn't take those driving dynamics options away will be at a disadvantage.

I'm pretty annoyed by the change honestly. hold mode never slows the truck down the same way twice, so it's always a challenge to feather the brakes nicely. Sometimes it stops really fast, other times it takes too long. But it's never the same timing for me to hurry and switch my foot from gas to brakes at the last second to come to a smooth stop. With roll mode it was a non issue. It worked the same every time and I could feather the brakes a bit earlier, giving me more time to switch pedals.

To me it's a safety issue. Any driver in the vehicle will have a slower reaction time to having to stop quickly if their foot has to stay on the gas until the very last second. If the driver in front of you stops short for some reason, and your foot is still on the gas, you lose time switching pedals. But if your foot was already on the brakes, you just push harder.

I suspect this has a lot to do with the claims of people who say the car accelerated by itself, and it turned out they pushed the gas. It's completely against muscle memory. Their foot is already on the gas, but normally it would have already been on the brakes. so they press down and the car accelerates.

 

[Alan]

I certainly have had to. The Cybertruck doesn't slow down as quickly, nor is the regen as aggressive as the Model Y. Showroom guy also warned me of it on delivery day (Saturday).

I trust your judgment. How do you like the truck.

 

[L3it3R]

The brakes are ‘adequate’ from stock. Will never turn down more braking performance - especially in such a heavy vehicle - this will be something I look forward to.

 

[Kuiper__Belt]

This performance brake upgrade I'm sure would be very similar to the Tesla Model S Plaid TRACK PACKAGE offered by Tesla where the increased stopping power allowed tesla to safely unlock a higher top speed increasing the overall performance of the vehicle. The reason Tesla does not add Carbon ceramic brakes to stock vehicles is to keep costs down. If individuals want to increase the performance of their vehicle and have the money to do so, that's were products like the Tesla model S Plaid Track Package comes into play.

So your saying that the Beast should have come with upgraded breaks...

 

[Jhodgesatmb]

I trust your judgment. How do you like the truck.

I love the truck of course. Just working my way through settings and such, figuring out where to put things, what accessories I need. It is a bit scary at first because it is wide and you don't know where the front corners are so tight intersections and narrow roads are stressful. There are times (not many) where the A-pillars block a person or a car and that can be disconcerting. The front camera is absolutely essential in parking because otherwise you think you are on top of something when you are really 6' away

 

[Leifmb]

Performance brakes excel due to their ability to function under repeated use and resistance to fade and heat in such an environment (track use for instance).

In 1 time emergency braking situations, as long as the brakes are adequate, there will be no appreciable difference between regular and performance brakes.

Car and driver did a test a few years ago on cars with and without performance brakes in emergency braking which confirmed this

Agreed, however “performance” brakes can come in handy when towing, for example, where braking surface area and heat dissipation can make a difference! I don’t plan on taking a “truck” to any track!

 

[scottf200]

In an emergency breaking situation, stopping in a shorter distance could make the difference in a collision or no collision plus, the towing capacity could possibly be increased due to the improvement in breaking power.

The regenerative process should do most of the work without over heating brakes much like engine braking except better. The actual braking with pads occurs mostly to keep car motionless at stops. I think the tires will start skidding before the brake capability of the stock brakes are reached. There is also the antilock braking that will have to be considered.

They mentioned emergency braking in which the physical brake pads would be almost "immediately" being used (ie. if in 'cruise control' then directly to the brake pedal or, if not, then the time to move from accel pedal to brake pedal). It's an all hands (pads) on deck situation.

 

[HaulingAss]

It's not about using them day to day but being able to really stop when you DON'T think you'll need to!

You don't need bigger brakes for that, the Cybertruck comes with huge calipers and discs. The only reason one would ever want bigger ones would be to increase the thermal capacity for track use. And only someone convinced that a Cybertruck would be a fun track vehicle would do that.

I've done two consecutive 100mph to 0mph stops (within a minute or so of each other), with the tires scrubbing a high friction road surface continuously, without even a hint of brake fade, right down to zero. The second stop was actually slightly better.

If you want even more emergency stopping performance, you want stickier rubber, not more powerful brakes. I really doubt Tesla is coming out with performance brakes, unless maybe they are getting ready to enter the Baja 1000, and figure they could use the extra thermal capacity. I'm not that familiar with the race, but I would be surprised if bigger brakes would help because low traction surfaces can only absorb so much braking energy. The extra weight of the discs and calipers would probably be anti-productive, in terms of race times.

 

[HaulingAss]

Agreed, however “performance” brakes can come in handy when towing, for example, where braking surface area and heat dissipation can make a difference! I don’t plan on taking a “truck” to any track!

There are very specific proceedures in the industry for verifying tow ratings, and they include some pretty taxing descents, in hot weather, at full towing capacity. If the trucks brakes are not up to snuff, they have to lower the tow rating or increase the size of the brakes.

Even towing a trailer at the maximum rating of 11,000 lbs, the trucks friction brakes should get very little use, relative to their large size. You can find YouTube videos illustrating this point very nicely on steep downgrades. If the brakes are the limiting factor, and I doubt they are, Tesla could up the tow rating for Cybertrucks equipped with bigger brakes. I'm skeptical that is the case.

 

[Leifmb]

You don't need bigger brakes for that, the Cybertruck comes with huge calipers and discs. The only reason one would ever want bigger ones would be to increase the thermal capacity for track use. And only someone convinced that a Cybertruck would be a fun track vehicle would do that.

I've done two consecutive 100mph to 0mph stops (within a minute or so of each other), with the tires scrubbing a high friction road surface continuously, without even a hint of brake fade, right down to zero. The second stop was actually slightly better.

If you want even more emergency stopping performance, you want stickier rubber, not more powerful brakes. I really doubt Tesla is coming out with performance brakes, unless maybe they are getting ready to enter the Baja 1000, and figure they could use the extra thermal capacity. I'm not that familiar with the race, but I would be surprised if bigger brakes would help because low traction surfaces can only absorb so much braking energy. The extra weight of the discs and calipers would probably be anti-productive, in terms of race times.

I’m thinking mostly bigger brakes for towing as I touched on above but since I haven’t even driven a CT, it’s all speculation!

 

[HaulingAss]

With the latest updates, I noticed my Cyberbeast's regen has been detuned some what so I'm using my brakes more than before...?. Why can't Tesla offer adjustable regen ?

That didn't happen on my Dual Motor with any of the recent updates. Was this verified in the release notes for the CyberBeast software update?

 

[HaulingAss]

I love the truck of course. Just working my way through settings and such, figuring out where to put things, what accessories I need. It is a bit scary at first because it is wide and you don't know where the front corners are so tight intersections and narrow roads are stressful. There are times (not many) where the A-pillars block a person or a car and that can be disconcerting. The front camera is absolutely essential in parking because otherwise you think you are on top of something when you are really 6' away

The front camera is really useful for learning exactly how close you can actually go to front objects. And it's a lot closer than you think. Now that I've adjusted, I only use the front camera in special instances (like doing a three point turnaround on a narrow mountain road with a sharp dropoff in front). You adjust pretty quickly to the very short front end.

 

[rjbonds]

So your saying that the Beast should have come with upgraded breaks...

All vehicle braking systems have to meet a minimum standard for safety reasons and there are many different braking systems that manufactures have to choose from so Tesla has to choose wisely between stopping power, reliability, weight, and price. Tesla is not going to spend 10k for a high performance braking system for any of their vehicles but, they might offer that 10k high performance braking system that is designed specifically for the Cybertruck and sell it for 20k to cybertruck owners that could use that extra performance whether it be for the race track, towing a heavy load or just for that little bit of extra safety assurance.

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