I'm looking at brake options. One kit I'm considering has bigger rotors front and rear but uses the stock calipers. Does a larger rotor have any benefits if the caliper remains stock size.
My understanding is that you need a bigger caliper in order to have a bigger surface area for the caliper to grab and thus give more stopping power.

 

while what you say is true some thing to consider is:

bigger rotors combined with stock calipers will move the braking force further from the center of the wheel, increasing the r portion of the rxF torque equation. that combined with the increased cooling of the larger rotor could increase performance. while it is not the perfect solution i believe it will make a difference i have no idea how much, but i can send you the equations from my vehicle dynamics book if you want to try and generate some predicted numbers

 

Tell me more about this larger rotor / stock caliper option - source? Price? This has me a little interested - since I now have beautiful red stock calipers...

 

You'll lose some HP at the wheels. How much? Probably 2-5 depending.

Might be worth extra stopping though.

 

BlimeyCabrio,
In response to your question, the shop where I get my tuning done has a brake kit with large slotted front rotors and large rear rotors, uses stock calipers, greenstuff pads and stainless steel brakelines. Total installed price $1,600.00. Don't know the manufacturer. I'm in California so I can't help you much with a source.

 

Sounds like it may be Ireland Engineering.
https://secure1.nexternal.com/shared...t=products.asp

I think a couple of people may be running these. Do a search and see what comes up!