Cobra vs. Cobra R rotors

[zzyzx]

Hey guys, are the Cobra R rotors (made by Brembo, I think) a bigger diameter than the stock Cobra rotors? Someone told me they are the same size, but that makes no sense to me as the calipers are different and surely they would have used a bigger rotor for the R model.

 

[txredgt]

Hey guys, are the Cobra R rotors (made by Brembo, I think) a bigger diameter than the stock Cobra rotors? Someone told me they are the same size, but that makes no sense to me as the calipers are different and surely they would have used a bigger rotor for the R model.

Stock Cobra's are 13" for sure and 2 piston calipers I'm pretty sure, the Cobra R's are 14" and 4 piston calipers.

 

[bdcardinal]

Stock Cobra's are 13" for sure and 2 piston calipers I'm pretty sure, the Cobra R's are 14" and 4 piston calipers.

2000 Cobra R's have the 4 pot Brembos calipers but they use a 13" rotor that is identical to the 1994-2004 Cobra rotors. I had the 2000 R setup on my 98GT and i was able to buy generic cobra replacements.

the 2007+ GT500 uses 14" rotors.

 

[txredgt]

2000 Cobra R's have the 4 pot Brembos calipers but they use a 13" rotor that is identical to the 1994-2004 Cobra rotors. I had the 2000 R setup on my 98GT and i was able to buy generic cobra replacements.

the 2007+ GT500 uses 14" rotors.

Ah you are correct. I quickly glanced at AM when I was going out the door before typing this. So the rotors are the same but calipers are different. Is it 2 piston vs 4 piston then?

 

[bdcardinal]

Ya, the 2000 Cobra R uses a 4 piston Brembo caliper. Here is my setup when i had my mustang.

 

[zzyzx]

How weird. Why would they not go to a bigger rotor? The whole point is heat dissipation.

 

[bdcardinal]

How weird. Why would they not go to a bigger rotor? The whole point is heat dissipation.

Remember this was like 11-12 years ago when it was new. 13" rotors were huge then.