GM/Brembo Performance brakes - thoughts + pics

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91RS

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The only performance difference would be in heat management coming down a mountain on the brakes towing (or if you're riding the brakes, etc) - the limiting factor for braking distances is your tire's contact patch not the brakes (unless they heat-soak as above). Since the stockers are capable of triggering ABS you can't get better than that until you change the tires.

That said, the brake feel alone is enough of a reason to get them and so I'm heavily considering the fronts (don't care about the matching paint color for the rears)
No. This is only true at the limit and maybe if we didn’t have ABS and Stabilitrac. During normal braking the tires are not the limiting factor anyway. If what you’re saying is true, then you could put brakes from a 1993 Civic on these trucks and it would stop exactly the same but we all know that’s not going to be the case. The Brembo are a massive improvement in stopping power under all circumstances.
 
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91RS

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Except we have ABS and Stabilitrac to prevent the tires from locking so, while better tires are always a great decision for all around handling improvements, that is but one piece of the puzzle rather than the only limiting factor as you keep saying.

There was at least one review of these on YouTube where they measured the stopping distance and they were better.
 

91RS

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A full on emergency stop is probably less than 1% of driving. This is the equivalent of talking peak horsepower, which only matters at WOT. What matters is what that power curve looks like or what happens all the other times you touch the brake pedal. More friction surface means more stopping and there is absolutely more grip with the Brembos than the stock brakes. It isn’t as noticeable on a 21 because of the fake brake pedal and they start with a 4 piston caliper where the older trucks start with a 2 piston but there is a massive improvement in your every day normal braking.
 

91RS

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Surface area does matter and so does a whole bunch of other things. More friction material surface space means more stopping. If that weren’t true then the brakes from a 93 Civic would stop these trucks just as well as the stock stuff or the Brembos. The dynamics of vehicle handling, stability, and braking are not determined solely by one single component. It is a system and everything must work together. Braking is NOT determined only one part. The master cylinder and the size of the pistons and size of the fluid passages, brake line inside diameter, how many pistons the calipers have, the size of those pistons, the size of the pad and rotor. If what you are saying is true, if heat dissipation is the only thing that matters, you could use a one piston caliper on a giant rotor and achieve exactly the same thing.
 

Thrust

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Getting to the point, there are four ways to improve brake torque:

1. Increase disc radius

Larger discs will allow for more brake torque as the brake pad will apply pressure at a larger radius, allowing for a higher moment. Brake torque is equal to the force applied by the pad multiplied by the distance at which the force is applied from the center of the wheel. In this case, we’re increasing the distance from the centre. This is a good thing.

2. Increase caliper piston area
Increasing the size of the pistons (or number of pistons) means you have more area applying a specific pressure. If pressure remains constant and the area increases, the force applied will increase.

3. Line pressure
Push your foot harder, and the car brakes harder. This is because the line pressure increases. If you can increase the line pressure (perhaps by creating a larger lever arm for your brake pedal to act upon, or using vacuum assist) you increase brake torque.

4. Friction coefficient between the pad and rotor
Perhaps self explanatory, but if you can increase the friction (this comes down to material selection; brake pad manufacturers will often supply this data) between the pad and the rotor, you can increase the braking torque. With more friction comes more heat, though, which brings us neatly on to…
 

slickbrave

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No experience with the Stoptech SS brake lines, but I’m sure they’re fine. Wilwood also makes a SS Brake line kit.

In my experience SS brake lines can really have a positive impact on pedal feel and brake response. Even when added to stock brakes.
My 2023 Yukon XL Denali Ultimate is ordered and expected in April. I intend to have the dealer install the Brembo brakes prior to delivery and I'd like to get the SS brake lines also. Since they don't sell these by application and I don't have the vehicle yet, can you advise what lengths I need? I want to do front and back. Thanks.
 

CMoore711

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My 2023 Yukon XL Denali Ultimate is ordered and expected in April. I intend to have the dealer install the Brembo brakes prior to delivery and I'd like to get the SS brake lines also. Since they don't sell these by application and I don't have the vehicle yet, can you advise what lengths I need? I want to do front and back. Thanks.

Wilwood offers front 16" BBK for 2023 GMC Yukon Denali Ultimate. For their front BBK they obviously also offer stainless steel brake lines.

They are Wilwood Part# 220-10979

These brake lines can be found for <$100.

These are also the same brake lines I run on the front of my 2015 GMC Yukon XL Denali Wilwood TX6R kit. You could maybe do some searching online to see what the brake line lengths of the stainless brake lines are in the Wilwood 220-10979 kit.

I do have a set of the Wilwood 220-10979 stainless brake lines in my garage; When I get a moment I'll go out and measure them and let you know.

I am not sure if the Wilwood 220-10979 stainless brake line kit would work with the GMC Brembo BBK upgrade or not? They might. If you could verify with Wilwood or by some online searching that the Wilwood stainless brake lines worked with just stock 2023 GMC Yukon Denali brakes I bet they would work for the GM Brembos also.
 

ProfeZZor X

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Brembo Blemish 1.jpgBrembo Blemish 2.jpg

I don't know which ****** me off more... The incompetent mechanic that chipped the caliper paint when he put my wheel back on, or Brembo for lying about custom painting a brand new set of calipers for my order and just painting over one of their off-the-shelf calipers (yellow)... and doing a ****** job at it too.

I've already had the brakes for a couple of months now, but so far they've been doing their job. It's just that the dust from these things are killing my microfiber towels, so I think I'll start soaking them in a bucket of brake dust remover.
 

Thrust

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20" wheel with a 275/55/R20 tire will fit in the spare tire area. I now have one in place of the temporary 17" spare.
 

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