gujustud

You're telling me that cross drilled rotors have NOTHING to do with removing brake dust?

Do some research, or do SEARCH on google.com

pimpp5

I just changed my front rotors to but I used the rotors from EBC. They are slotted and dimpled but they only make em for the front. I havent had any problem with them yet.

B8 Turbo

FYI, I had seen a mod up 3rd gen RX-7 with cross-drilled rotors on 4 corners doing autox. The guy couldn't stop the car and there were sqeaking sounds during his hard braking. In the end, the car just plough thru the cones.
From that day on, I'd never go for cross-drilled cuz they decrease the surface area.
The choice is yours. Looking good with less dust and not being able to stop the car or being able to stop the car and avoiding all the hassles later on.

gujustud

Oh man, thats nuts! Thanks for the info, cuz I'm doing all the research I can before I do this, if I do it.

Just wondering why lots of the Porsche have these then?

deckedoutmp5

there is a guy on ebay who sells brembo rotors, they are cross drilled and slotted. they are 5 bolt for the 99 up 5 bolt. only 100 bucks a set. very good. FYI
ebay has it all.....

carguycw

(1) Style. (2) Many people THINK they increase performance.

For more details, here's a semi-satirical look at the 3 major groups of new Porsche buyers:

40%- Bought the car as an expensive fashion accessory, to match their Rolex watch, Gucci clothes, and $600k home in West Plano, Texas. Pronounces the name "Porsh". Does not really care how the car drives; also considered buying a Mercedes S500, but thought it was too conservative, and a Hummer H2, but thought it was too redneck.
What They Think: "Gee, those shiny round thingies inside the wheels look really cool!"

55%- Bought their car to fulfill their childhood fantasy of being a racecar driver. Thinks the car is the finest racing machine in the world, but doesn't really know anything about racing other than what they've gleaned from reading Road & Track, and never pushes the car to the limit because they might hit something and scratch the meticulously waxed paint. Pronounces the name "Por-sha" and believes they know all about performance, but actually know very little.
What They Think: "The cross-drilled rotors are a serious racing accessory that reduces brake fade! What is brake fade, anyway?"

5%- Porsche Club lapping sessions junkies who appreciate the car for what it is. Bought the rare optional performance suspension and optional racing seats. Really know what they have.
What They Think: "I wish they would stop using these %$^(*& drilled rotors, damn things are too expensive to replace."

deckedoutmp5

um they work and fit great. cheap and they are brembo, im not even the seller. im just passing on this if you want to save money and even want slotted and x-drilled rotors.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=1873423477
the pic is not right. he has the 5 bolt, the pic is just a example.

B8 Turbo

If anyone is a NASCAR fan, just check out their rotors if you get the chance. Are they x-drilled or slotted? How about Formula 1? Are their rotors x-drilled or slotted? How about Touring Cars? Are their rotors x-drilled or slotted?
Actually, I've seen touring cars with slotted rotors upfront and x-drilled at rear.
I am sure these type of cars have aerodynamically engineered the cars so that they can channel air onto the rotors for cooling via air ducts etc.
I know that a lot of big players like Brembo, Alcon, Stoptech, Wilwood are making their own rotos x-drilled & or slotted. Those guys have special manufacturing processes so that the integrity of the rotors wouldn't deteriorate. Plus they have R&D ppl spending countless hrs in R&D!
Nonetheless and in conclusion, if you've got the juice to buy those branded stuff, no problem. Most of us are budget minded and think in terms of "Bang for the buck!"

deckedoutmp5

its all true and good, but our mazdas arent racers, the ones we drive on the street, even with turbos and nos they still dont have enough power to make a difference to use a better braking system. you get an NSX yeah but MP5 no. so even if you get slotted or x-drilled, you wont get them to that point anyways. they are just for looks and do the same damn thing. who cares. our cars really are just for show not for go. you want go get somthing else. oh and PseudoRealityX i dig your info you have, you have way more posts then anyone in here and you are very helpful. PEACE and THX

B8 Turbo

Some of the enthusiasts in this country would buy used rotors, skim off the uneven warpage, and asked a machinist to drill holes in the blank rotors for looks. In street use, they never knew the dangers but when they really need the brakes to work, well they end up crashing. Not many of them are knowledgeable about many things over here. Some of them are even big talkers that by the end of the day, it shows their incompetence. Thus, knowledge is power and those who know will benefit quite a bit in this country.

mpx_32

hello guys i have KVR xdrill and pads and im extremely happy with them, had no problem at all to install them.


mpx

carguycw

FWIW there is some disagreement among the racing community about drilled or slotted rotors on endurance-racing cars. European racers argue that drilled rotors work better in the rain and keep the rotors from glazing. Most American teams don't believe this and argue that drilled rotors just make the pads and rotors wear out faster. This is why European sports car teams often run drilled or slotted rotors (sometimes both), but American sports car racers and NASCAR teams generally do not.

However, almost all racers realize that if you use modern brake pads, holes and slots do NOT decrease stopping distances, reduce brake fade, or reduce rotor warpage... the reasons most street enthusiasts cite for running drilled or slotted rotors.