I need new rotors for '91 ZR-1 - ZR-1 Net Registry Forums

JThomas · 02-13-2017

Looking to purchase new rotors for my '91 ZR-1. OEM standard rotors are fine or a set of slotted and drilled rotors. Correct size is 13" front and rear in diameter, Heavy duty? Not interested in upgrading to larger brakes or modifications.

Looking for suggestions in brands, thanks.

32valvesftw · 02-13-2017

Try rockauto.com, I have their powerstop brakes on the Wifes Tahoe, they have been very good, nice feel, little fade and low dust. Our cars use the J55 brakes.

Z51JEFF · 02-14-2017

Bought a set of drilled rotors from Summit a few years ago for $300 a set.

XfireZ51 · 02-14-2017

Quote:

Originally Posted by JThomas

Looking to purchase new rotors for my '91 ZR-1. OEM standard rotors are fine or a set of slotted and drilled rotors. Correct size is 13" front and rear in diameter, Heavy duty? Not interested in upgrading to larger brakes or modifications.

Looking for suggestions in brands, thanks.

Joe,

I don't believe the rear rotors are 13". Believe they're 12s.

Hib Halverson · 02-14-2017

I have a set of rotors for any C4 with J55 brakes. They are StopTech rotors and are gray coated. The friction surfaces are grooved, but not drilled which is the best way to go for performance use.

At one time I had them on Barney my '95 for product evaluation. These rotors are used but with plenty of thickness left.

I'll sell the set for $100 plus the shipping.

If you are interested, PM me and I'll mic each of them and give you the dimension.

JThomas · 02-14-2017

Quote:

Originally Posted by XfireZ51

Joe,

I don't believe the rear rotors are 13". Believe they're 12s.

That's what has me confused. I thought the rotors were the same size on the ZR-1, 13" in diameter, all the way around, heavy duty. Now I'm going to have to go to the spec sheets!

XfireZ51 · 02-14-2017

Quote:

Originally Posted by JThomas

That's what has me confused. I thought the rotors were the same size on the ZR-1, 13" in diameter, all the way around, heavy duty. Now I'm going to have to go to the spec sheets!

I replaced th stock ones last year when I did the Z06 brake upgrade. The Z06 is a 4 piston/13" rotor in the rear. Stock is a 12" rear rotor.

bdw18_123 · 02-15-2017

I replaced the rotors on the ZR-1 I used to have, I can confirm the rears are definitely 12 inch. Only the fronts are 13 inch.

JThomas · 02-15-2017

Quote:

Originally Posted by 32valvesftw

Try rockauto.com, I have their powerstop brakes on the Wifes Tahoe, they have been very good, nice feel, little fade and low dust. Our cars use the J55 brakes.

Thanks

JThomas · 02-15-2017

Quote:

Originally Posted by Z51JEFF

Bought a set of drilled rotors from Summit a few years ago for $300 a set.

Thanks

02-13-2017	#1
JThomas Join Date: May 2008 Location: Okemos, MI. Posts: 1,186	I need new rotors for '91 ZR-1 Looking to purchase new rotors for my '91 ZR-1. OEM standard rotors are fine or a set of slotted and drilled rotors. Correct size is 13" front and rear in diameter, Heavy duty? Not interested in upgrading to larger brakes or modifications. Looking for suggestions in brands, thanks. __________________ Joe Thomas Corvette Club of Michigan NCRS-Michigan Chapter Member NCM Master Ambassador NCM Lifetime Member Former NCM Board Member 1991 ZR-1 Melon Copper Metallic/Black 1992 ZR-1 Bright Red/Black (Sold) 1995 ZR-1 Bright Aqua/Gray (Sold) 2012 ZR1 Super Sonic Blue / Dark Titanium

02-13-2017	#2
32valvesftw Join Date: Jun 2015 Location: Texas Posts: 530	Re: I need new rotors for '91 ZR-1 Try rockauto.com, I have their powerstop brakes on the Wifes Tahoe, they have been very good, nice feel, little fade and low dust. Our cars use the J55 brakes.

02-14-2017	#3
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,052	Re: I need new rotors for '91 ZR-1 Bought a set of drilled rotors from Summit a few years ago for $300 a set.

02-14-2017	#5
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 899	Re: I need new rotors for '91 ZR-1 I have a set of rotors for any C4 with J55 brakes. They are StopTech rotors and are gray coated. The friction surfaces are grooved, but not drilled which is the best way to go for performance use. At one time I had them on Barney my '95 for product evaluation. These rotors are used but with plenty of thickness left. I'll sell the set for $100 plus the shipping. If you are interested, PM me and I'll mic each of them and give you the dimension. __________________ Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878

02-15-2017	#8
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	Re: I need new rotors for '91 ZR-1 I replaced the rotors on the ZR-1 I used to have, I can confirm the rears are definitely 12 inch. Only the fronts are 13 inch. __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:)