rikhek

I've searched and can't find the answer.....

I believe the base C6 (i.e., non Z51, non Z06) front and rear rotors are a direct fit on a C5. Am I correct?

A friend gave me a set and I was surprised to see they are designed differently. Appear to be same diameter and width but different.

TIA.

Rick

gkmccready

Yes. C5 rotors, and base C6 rotors are the same size.

I've run NAPA C5 rotors on my C6 Z51 using C6 base model caliper brackets. I currently run the NAPA C5 rotors with Wilwood SL6R (full-width) calipers on LGM [C5] mounts.

rikhek

Thanks for the response. Wonder why they changed the physical design. The C6 fronts look like they were designed to accept parking brake shoes.... The pad contact areas for the C6 rears is not as wide as the C5. I thought it was an illusion but they measure narrower.

Rick

rikhek

Anybody?

0Todd TCE

The rotors swept portion vs hat can be an illusion at times. The friction surface need only be slightly wider than the height (viewed width) of the pad. For example; if the pad is 1.875" tall then the friction surface can be held to about 2.00" in width. Having more rotor 'ring' than that really serves no purpose and can be added weight.

Also to boost performance a bit pads on many "performance vehicles" tend to be more long and skinny in design rather than short and fat as many street cars are. This places the working portion of the pad at a higher spot on the rotor- referred to as Effective Radius or Er. Again for example; a 13" rotor with a narrow pad works at perhaps a 6" radius whereas a 13" rotor with a more conventional box shape pad works at 5" radius. At 5" the torque generated (averages) is less then at 6" and thereby less efficient. The down side however is that larger Er wears faster and is less tolerant of run out than the use of the short fat, box pad.

Hope that gives you some thing to go on.

L98Terror

plain and simple yes & they last longer, I've been running C6 rotors for a few years now.

Diesel68

Are you using OEM rotors or are they aftermarket like Raybestos, NAPA, etc.? This is good to hear.

rikhek

Terror,

Thanks! I got a great deal on a set from a track friend who sold his C6 coupe. Good to know they'll fit.

Rick