GTinCT

I'm thinking about upgrading the rotors on my GT to Rotorpros. Can someone explain the advantages / disadvantages of slotted, drilled, or both? Is there a difference in braking performance - especially since I don't have any plans to upgrade my calipers? I'd probably go for the low dust pads as well.
Any help would be appreciated. Thanks.

G.T

Slotted Rotors improve wet weather braking by preventing hydroplaning between the pad and rotor.
they also improve the pad "bite" by forcing the generated gassed to expel by the slots.

Drilled Rotors have improved cooling under extreme conditions, preventing the rotors from flexing, heating up excessively and comprimising the braking efficiency
Slotted and Drilled Rotors is a just a combination of the above..

whatever you do.. don't go cheap
a badly slotted or drilled rotor will eat through your pads in no time and cause all kinds of noise and brake vibration

TacoBill

Did someone say Rotorpros?

Yup, have them on mine with the stock calipers and pads.

Everything so far is fine with them. I mainly upgraded to them for looks.

Click on my sig link for install photos of the rotors.

Imatk

So are the rotorpros good?

TacoBill

They are great for what they cost.

Of course, if money is of no object, a set of Brembo's would be better.

Imatk

Yeah... that's always the problem hehe.. No I'm like you, I just really want the "look" of the kit. The brakes do very nicely and I don't race the car or anything so as long as the rotor is a good quality product that works for me.

89Trooper

Bill and I went through this a few months ago... trying to figure out the quality of RotorPros, what pads to use, etc. We both had very few miles on our cars, so we decided to change the rotors and leave the stock pads. I have very minimal brake dust and stopping power is great.

Since you are like us, and aren't racing, don't worry about the cross-drilled holes cracking. And the slots help remove any gasses normally trapped under the pad (as mentioned above). (Just make sure you put them on the correct way - look at Bill's link above).

Boltzman

How much is that??

89Trooper

Mine: Cross-Drilled/Slotted rotors with black powdercoated hubs and cooling vents: $330 including shipping.

Bills: Cross-Drilled/Slotted rotors with zinc plated hubs and cooling vents: $330 including shipping + I think $20 for the zinc coating.

To double check, fill out this form:

http://www.rotorpros.com/quote.htm

Or, if you want, wait and check mine out at MOSI!

Boltzman

Whats the diff between powder coated and zinc plateds?? I am really thinking about this and using my existing calipers (after painting them red)

89Trooper

Well, on mine the hub and vents are powdercoated black, so those parts don't rust. But, the pad doesn't use the entire rotor so a small ring next to the hub and a small ring around the outer edge rusts (this happens on stock rotors, too).

I took off the rotors, taped up most of the area that the pads hit, and sprayed them with black hi-temp brake paint.

Bill's are silver on the hub and on the vents. Maybe since it is zinc-coated, the parts where the pads don't hit won't rust. I'll have to ask Bill.

Depends on whether you want to see black inside the wheel... or silver. With Tungsten, you may want the zinc-plated.

GTinCT

Well, thanks for all the info.
What about installation? This isn't a job I feel comfortable taking on myself. What should I expect to pay to replace all four rotors? And should I just go to the dealer, or should any mechanic be able to handle this?

89Trooper

You can do it! See if you feel comfortable doing it after reading through these:

http://forums.bradbarnett.net/showpo...&postcount=428

http://forums.bradbarnett.net/showpo...&postcount=429

http://forums.bradbarnett.net/showpo...&postcount=507

After you jack up the car and remove the wheels, there are only 2 more bolts in your way of new rotors! If a buddy helps, you don't have to worry about the calipers. Just remove the 2 bolts, then have them slide the calipers off of the old rotors, then you swap rotors, then they slide the calipers back on. 2 bolts back on and you're done!

The bolts are tighter on the front calipers as Bill mentions, but they weren't that big of a deal. I think you can save some money and have the satisfaction of doing it yourself.

Boltzman

Thanks Tom..yeah it looks like zinc for me

TacoBill

Awesome write-ups! Oh wait, I wrote them...

+1 on the satisfaction of doing it yourself.