Quote:
Originally Posted by civicracer32
Bust out the tape measure.
Why do you want them bigger. They are big enough, unless you want the "look". Added weight and weight distribution of larger rotors will slow down the acceleration of your car.
My 98 eclipse GSX had 10 3/4" rotors up front with 2 piston calipers and they worked great on a 3150lb car. However, the 10 1/4" rotors with single piston calipers on the GS-T models(FWD) were severely weak and faded very rapidly. To save money if you were looking for better heat dissipation, you could go with a cross drilled/slotted rotor. Slotted only is not really worth it IMO. If you go with a much bigger rotor, you may need a bigger caliper too putting you in the $1-2K range. They make kits with larger rotors with caliper extender brackets too. But again, on our cars, the brakes are quite sufficient for most peeps.
Good Luck. Type in big Brakes civic Si in the google search for some ideas
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Slotted rotors have been proven more effective at cleaning the pad surface and removing brake dust than either cross drilled, or slotted and cross drilled. On top of that, they are better from a structural standpoint because you don't have a bunch of holes in a highly stressed component. A few surface grooves aren't as bad as a bunch of holes.
If anyone is looking for a quick upgrade to the stock brakes for trackdays and the like, you could always switch to a higher temp racing compound. Cheaper and more effective than randomly applying different parts to the brake system.