well.. i don't know if i would call it the "best" kit.. but i got a baer kit for my del sol. it uses 13 inch rotors with corvette dual piston calipers. comes with the mounting hardware and steel braided lines. cost around 700 bucks. i couldn't tell you how well they work cuz the car is in about a thousand pieces at the moment.. but once i get it together (in a couple weeks) you're more than welcome to stop by and check them out.

it uses 13 inch rotors with corvette dual piston calipers. comes with the mounting hardware and steel braided lines. cost around 700 bucks..

hell no they wont fit under a 15" wheel!

If you can lock up your brakes with the stock set-up, then you don't need an upgraded brake kit.

If you can lock up your brakes with the stock set-up, then you don't need an upgraded brake kit.

If you get cross-drilled rotors, then it's all for show.

take care,

aj

hell no they wont fit under a 15" wheel!

Helly Yeah thanks for the response

why the hell would you want to lock up your brakes??? cross-drilled rotors are not only for show, if they were why does mercedes, ferrari, porshoe all use them?? i bought the brembo cross drilled rotors cause they were $10 each more than stock rotors when i was shopping around for them, and they do help w/ performance..

I hate to interject a little tech into this thread, but I guess I'll try.

Somebody brought up the point that "Porsche uses crossdrilled rotors, so they must be better, right?" Or something to that effect. There are a few reasons that Porsche rotors are the exception to the rule:

1) The holes are cast in giving a dense boundary layer-type crystalline grain structure around the hole at the microscopic level as opposed to drilling which cuts holes in the existing grain pattern leaving open endgrains, etc, just begging for cracks.

2) The holes are only half the diameter of the holes in most drilled rotors. This reduces the stress concentration factor due to hole interaction which is a function (not linear) of hole diameters and the distance between them.

3) Since the holes are only 1/2 as big they remove only 1/4 as much surface area and mass from the rotor faces as a larger hole. This does a couple of things:

It increases effective pad area compared with larger holes. The larger the pad area the cooler they will run, all else being equal. If the same amount of heat is generated over a larger surface area it will result in a lower temperature for both surfaces.

It increases the mass the rotor faces have to absorb heat with. If the same amount of heat is put into a rotor with a larger mass, it will result in a lower temperature.

3) The holes are placed along the vanes, actually cutting into them giving the vane a "half moon" cut along its width. You can see that here:




This does a couple of things:

First, it greatly increases the surface area of the vanes which allows the entire rotors to run cooler which helps prevent cracks by itself.

Second, it effectively stops cracking on that side of the hole which makes it very difficult to get "hole to hole" cracks that go all the way through the face rotor (you'll get tiny surface "spider cracks" on any rotor, blank included if you look hard enough).

5) The biggest reasons Porsche brakes are so good:

Pad area. Here's a caliper and pad from a Ferrari F355 compared with the Porsche Big Red (painted to look like the Ferrari):



BTW, the last time I saw a car at a PCA event with cracked rotors...it was a Ferrari. They use standard Brembo rotors drilled "the easy way."

Movit sells alot of brakes to Ferrari owners. That's probably one of the reasons why Porsche Monoblock calipers are on backorder worldwide right now damnit!!!

That's why Porsche rotors are the only "crossdrilled" rotors I would ever consider putting on my car...in fact, I'm planning on it.

BTW, many of the above features are not present in older Porsche brakes. The above is for "Big Reds" and newer. I'm not sure what vintage the pic of the cracked Porsche rotors was but they weren't Big Reds.

ok..this is simple.

brakes do not stop a car. the tires do.they are the gripping force that comes into contact with the ground. better tires=better braking..think about that one for awhile.

stock brakes are capable of locking up the tires. they are "adequate" for normal driving. for higher performance applications, (spirited driving, racing)..."BIGGER" brakes are better..due to their ability to take and dissipate heat from the friction created. Also for the larger sizes of caliper that can be used to apply more clamping force, which generates more heat, which larger calipers do. the larger rotors can take MORE of this heat..due to size, and dissipate it better due to more mass.

cross drilled rotors are more for looks than for performance due to todays technology in pad materials. look at any form of racing, and they are running huge regular rotors..or in some instances slotted rotors (ex: Rally keeping pads cleaner) Slotted are somewhat better due to the ability to self clean the pad. But still do not improve braking ability the way that larger size brake systems can.

This does not mean that slotted or cross drilled brake sets do not "improve" braking, but they are not the end all to a good system. There are several companies that use cross drilled and slotted rotors in conjunction with larger brake sets. for every last little improvement they provide. But, they do not brake better than a regular large diameter brake upgrade kit. Slotting/drilling is most often used to help dissapate that build up, not to dissapate heat. That is the reason you may find upgrade kits with one or both..but the kits that improve braking are always going to be larger rotors and calipers. If they aren't larger, than they arent going to be much of an improvement other than looks.

cross drilled rotors are more for looks than for performance due to todays technology in pad materials.