Cross Drilled and Slotted Rotors Which ones to choose from?

gemex · Jul 23, 2004

Now that I’m done with all the H.P. mods it’s time for brakes. Can I get everyone’s opinions on the two options for the 03 cobra brake upgrades please? There is a price difference of $400+ is it worth it? Thanks!

Aimca drilled and slotted with silver coating $490.00 http://www.discbrakesrus.com/make/ford/cobra.htm

Baer EradiSpeed drilled and slotted $850.00 http://www.rpmoutlet.com/03cobrabaer.htm

SJ Cobra · Jul 23, 2004

I have the Baer Eradispeeds, actually I'm selling them along with some 4 piston Brembo calipers ( same ones as on the Cobra 2000R). The Baer Eradispeed plus are a two piece rotor. Very nice show quality. From what I was looking at with the other ones, they all look to be a 1 piece design. I have gone to Wilwood with my entire brake system and am waiting on a special rear kit from Specialty Brakes. Will have 13" rotors all corners, not cheap though, about $4000 for everything. You may want to look into Wilwood before you make the choice.

www.wilwood.com also www.specialtybrakes.com

tschlientz · Jul 23, 2004

Some other opinions before you go shopping. I was thinking along similar lines, but now think I might stick with a good set of basic rotors and some upgraded pads. I would rather stop fast than look pretty.

I still do like the look though...

http://www.modularfords.com/forums/showthread.php?t=13923

54life · Jul 24, 2004

go with just the slotted....drilled really eats up your pads man....they make special pads for them but they still go really quick...I would only go with the drilled if you are going to autocross.....just my experience

tygr1 · Jul 24, 2004

Gemex and SJ Cobra...are you guys racing your cars? What kind of racing? Where?

Just curious.

BLK_ROUSH · Jul 24, 2004

The thread give you a lot of opinions.

BOTTOMLINE: Slotted BLING; Drilled/Slotted EXPENSIVE BLING ..... Decide what best fits you. Track whore ... street use only .... show diva etc...
Recommend: Slotted In case you do a little of all the above

chuckystang · Jul 24, 2004

I think the best set up for the street consists of Powerslot rotors front and rear, they are slotted and vented, and add Hawk pads all around, and boy did it make a difference from my stock cobra brakes which were good already

atvcrazy · Jul 25, 2004

My cobra seems to have pretty awesome stock brakes.

RDvenom99 · Jul 25, 2004

chuckystang said:
I think the best set up for the street consists of Powerslot rotors front and rear, they are slotted and vented, and add Hawk pads all around, and boy did it make a difference from my stock cobra brakes which were good already

I have the same setup and I love it!

01_SVT · Jul 25, 2004

I own Baer...but not the 2 piece design. They are cross drilled and slotted. I bought them from a Baer Distributor in Virginia.... Delivered to my door in NY, $630. Can't beat that! Oh and you better get new pads too!

I added some pictures below...they are far shots but it will give you an idea of what they will look like...

CrimsonCobra_01 · Jul 26, 2004

do drilled rotors really crack? ive heard that but dont know if its true

COBRA90GT · Jul 26, 2004

CrimsonCobra_01 said:
do drilled rotors really crack? ive heard that but dont know if its true

Yes, drilled rotors, as well as slotted, or even "regular" rotors are all susceptible to cracking under the right circumstances...

Black96Snake · Jul 26, 2004

I would buy the brembos from the tire rack for 62 ea front, plain rotors no fancy bling but a good high quality rotor at a price that can't be beat.

I had cross drilled rotors and they were fine, they did crack a little but were still completely functional. I put about 55k on them, and even though they could have gone a little longer I decided that the brembro's were to good a deal to pass up, so I bought brembos for all 4 corners and got some stainless lines while I was at it. The brakes are as good as new now, I doubt I lost any performance to the X-drilled rotors (even compared to when they were new). They may even be better now, It's hard to tell.

cobra259 · Jul 26, 2004

I've got cross/slotted Brembos at all 4 coners! Look sweet, stop better than the stock ones(not that they were bad in any way) Keep a eye on e/bay! I got all 4 right to my front door 4 $330...brand new, still in the box!

CrimsonCobra_01 · Jul 26, 2004

so its not worse than stock to get drillled? i dont wanna get new rotors that are more suseptable to breakin

Pumped03Snake · Jul 26, 2004

I run the 2-piece Eradispeed Plus on my 03 Cobra. I don't drive my 03 hard on the street. I'm not a hard braker. Usually when I come up on a red light, people blow by me as I come to a gradual stop while they are standing on their brakes at the last second. I got one of the first 03's in the country in June of 2002. It arrived one month late. I had ordered a full exhaust and Baers in April so I would have them when the car was orginally was supposed to arrive in early May. This was my third Cobra. I drove it straight from the dealer and slapped on the exhaust and rotors the same day. Today the car just turned over 37k miles. About three months ago I had to replace the pads. That is when I really looked closely at my front rotors. I was shocked at the cracking around the holes. I am dissappointed. Although the rotors have seen it pretty easy on the street, I did give them hell at the track. I ran H&R spacers on the front so I could run skinnies. I made the mistake of buying 24 inch tall Front Runners. They add a few revs over the normal 26 inch tall tires. I really heated them trying to pull the car down from 125 mph traps when I tried to slow gradually and then got into trouble at the end running out of track and brake fade. I'm sure this caused some of the cracking but for the number of passes, I think hard driving would really cause severe cracking.

I painted my calipers Ford red and they look super sharp. Would I buy a set again? Yes I would but for the looks alone. My racing is straight line on the track only. If I were a road racer or drove hard on the street, I would run slotted only.

CrimsonCobra_01 · Jul 26, 2004

thanks, i guess life of the rotors means more than looks do

1993R · Jul 27, 2004

If you plan on open tracking the car stay away from drilled...I broke a new set 5 minutes into a session.For the street they are probably ok. I use stock rotors just like Black96Snake......

gemex · Jul 27, 2004

Thanks all for the replies and some cool pictures. My car is for weekends, but I also race it occasionally at Thunder Hill raceway in northern California. Looks and performance are both important, and I see great arguments for both types.

lemosley01 · Jul 27, 2004

gemex said:
...and I see great arguments for both types.

No you don't - go do a search at www.corner-carvers.com on cross-drilled rotors.

Basically all show (BLING BLING) and no go - they solve a problem that no longer exists (brake pads gassing off and the gases needing some place to go).

Cross Drilled and Slotted Rotors Which ones to choose from?

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