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Cobra vs. Cobra R rotors

  • Thread starter Thread starter zzyzx
  • Start date Start date Mar 1, 2011
Z

zzyzx

Member
Dec 10, 2009
34
0
7
California
Mar 1, 2011
#1
  • Mar 1, 2011
  • #1
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

10 Year Member
Oct 26, 2009
1,343
33
69
Mar 1, 2011
#2
  • Mar 1, 2011
  • #2
zzyzx said:
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.
Click to expand...

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.
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Mar 1, 2011
#3
  • Mar 1, 2011
  • #3
ahall2004 said:
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.
Click to expand...

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

10 Year Member
Oct 26, 2009
1,343
33
69
Mar 1, 2011
#4
  • Mar 1, 2011
  • #4
bdcardinal said:
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.
Click to expand...

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?
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Mar 1, 2011
#5
  • Mar 1, 2011
  • #5
Ya, the 2000 Cobra R uses a 4 piston Brembo caliper. Here is my setup when i had my mustang.

 
Z

zzyzx

Member
Dec 10, 2009
34
0
7
California
Mar 1, 2011
#6
  • Mar 1, 2011
  • #6
How weird. Why would they not go to a bigger rotor? The whole point is heat dissipation.
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Mar 2, 2011
#7
  • Mar 2, 2011
  • #7
zzyzx said:
How weird. Why would they not go to a bigger rotor? The whole point is heat dissipation.
Click to expand...

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