Looking for better rotors

CampingGuy53 wrote:

Turtle n Peeps wrote:
For those of you that think drilled and or slotted rotors are the way to go on a tow rig you would be mistaken. You are taking away from your braking force and not doing a thing for cooling.

Here is an article that explains it very well.

Here is another really good read on the subject.

There's a lot of misconceptions about drilled vs non-drilled rotors and what the drill holes do for cooling. GM did a study back in 2006 on just this very topic. http://papers.sae.org/2006-01-0691/

I downloaded the paper...
"Testing on brake system 1 confirmed that the 90-hole
crossdrill pattern on the front brake improved heat
rejection capability of the rotor between 8.8% and 20.1%
depending on the vehicle speed."

Funny, Wilwood also did a study and says this:

Wilwood wrote:
PSlots or grooves in rotor faces are partly a carryover from the days of asbestos pads. Asbestos and other organic pads were prone to “glazing” and the slots tended to help “scrape or de-glaze” them. Also, cross-drilling and/or slotting the rotor for racing purposes was beneficial by providing a way to expel the gasses created when the bonding agents employed to manufacture the pads began to break down at extreme temperatures. This condition is often referred to as “outgassing.” When it does occur, the driver still has a good firm brake pedal, but a significant reduction in friction. Normally this only happens at temperatures witnessed in racing. However, with today’s race pad technology, “outgassing” is no longer a concern with pads designed for racing.

Everybody says this:

Everybody that knows anything about brakes wrote:
Rotors that are drilled or slotted are more susceptible to cracking under severe usage.

I can afford cracking in my rotors on the car I race because it's no big deal if a rotor fails on the track. I can't say the same about if that happens on my TV with my trailer in tow.

and they end with this:

Wilwood wrote:
So in the final analysis, drilling and slotting rotors has become popular in street applications for their pure aesthetic value.

Now, after reading all of that ^^^^, you have to ask yourself if drilled or slotted rotors are sooooooooooooo good at cooling why don't you see them used for heavy duty use like on HD pickups or class 5, 6, 7, 8 or above big rigs?

BTW, Wilwood brings us some of the best brakes in the industry. GM brought us the 5.7 Olds diesel and ignition switches that turn off on accident. Who are you going to believe? :B