Carbon brake rotors

[Grant-53]

We live on the PA border and I sold auto parts for over a decade. I dimple drilled the rotors on nickel alloy rotors for my Corolla. I used medium grade pads. Ventilated rotors can rust between faces so I would consider painting them with high temp stove paint. Are the rotors warping or grooving?

[Stubby79]

Originally Posted by Michael Dinich

Thank you for your reply, I like how your experience with a completely different vehicle that is significantly lighter presupposes we must not be driving our vehicle correctly. I will be sure to instruct the misses that our mountain is not an "actual mountain" and all premature wear on the vehicle is entirely psychosomatic". Additionaly, I will instruct other armada and titan owners experiencing the same issue that premature rotor wear is just a conspiracy.

(Coming from a sarcastic SOB, I find that pretty amusing)

[jamesqf]

Originally Posted by Michael Dinich

I like how your experience with a completely different vehicle that is significantly lighter presupposes we must not be driving our vehicle correctly.

Brakes are brakes, no? The amount of energy they need to dissipate is simply a matter of physics: mass * speed minus whatever is dissipated by engine braking.

As for being significantly lighter, 2017 Armada curb weight (4x4) 5822 lbs per Nissan's web site. 4x4 Toyota with cargo ~5000 lbs, so not that much difference unless you frequently tow a trailer.

I will be sure to instruct the misses that our mountain is not an "actual mountain"...

Or you could come out west, and do a first-hand comparison :-) I did grow up not too far from there, so am familiar with what are called mountains thereabouts.

...and all premature wear on the vehicle is entirely psychosomatic". Additionaly, I will instruct other armada and titan owners experiencing the same issue that premature rotor wear is just a conspiracy.

Well, I'd think a competent auto engineer would specify appropriately-sized rotors for the weight (including cargo/towing). If this is a consistent design flaw, maybe you need to take it up with the manufacturer.

But I'm more than a bit puzzled by the fact that your rotors wear. Brake pads, yes, but rotors? That seems like replacing your wheels because the tires are worn. Of all the vehicles I've owned, many of them pretty high mileage (my current 3 all have over 200K), the only time I've had to replace the actual rotors is when a previous owner let the pads wear down so far the rotors were scored.

[cr45]

Originally Posted by jamesqf

Brakes are brakes, no? The amount of energy they need to dissipate is simply a matter of physics: mass * speed minus whatever is dissipated by engine braking.

Much better to use correct physics though.

The kinetic energy of a vehicle with a given mass and velocity is found from

KE = 0.5 x mass x velocity ^ 2

using SI units

[freebeard]

Brakes are brakes, no?

Like everything else they have a long, evolutionary history; mechanical, hydraulic, self-adjusting drums, ventilated (and cross-ventilated)disk rotors. Two, four six-piston calipers.

Brembo, Airheart and others make good money selling upgrades for specific needs — speed/velocity as well as weight/mass.

Find disc brake conversion kits from Wilwood, SSBC, Baer, Ford Racing, Right Stuff, Strange, and more! Order yours today from Summit Racing!

https://www.summitracing.com/search/...isc-brake-kits

[oil pan 4]

All brakes are not created equal.
Carbon ceramic rotors take much more heat than anything metalic.

[jamesqf]

Originally Posted by oil pan 4

All brakes are not created equal.
Carbon ceramic rotors take much more heat than anything metalic.

Sure, but unless you're racing or towing heavy trailers down mountains, why would you need to dissipate all that much heat? See e.g. this: EcoDriving 101 – Driving Without Brakes

[oil pan 4]

I do tow with my firebird and I am very happy it has the 5.7L engine and 1.5 inch larger than stock corvette brakes on the front. I have towed so much with it my max speed in 6th gear was 70mph.

[freebeard]

Another contender, the 2018 Porsche Cayenne:

https://jalopnik.com/all-the-crazy-e...-po-1819386075

Porsche was excited to show off its “innovative new braking technology” called the Porsche Surface Coated Brake, or PSCB. Essentially, it’s meant to be an in-between option for folks who want something a bit more special than standard steel discs, but who don’t want to drop nine grand on carbon ceramics.