Looking for 13" rotors with 5x5 bolt pattern

[RAMKAT2]

Does anyone know of a factory disc brake rotor that is 13" in diameter and 1.25" thick, with a 5 x 5 bolt pattern? There are several GM units that are 12" diameter, but I would like to find one that is larger for the front of my Riviera. Thanks for the help, Randy

[chicane67]

Factory in those diamentions... ?... uhm, nope.

You could do a two piece rotor and select your hat and rotor diamentions pretty easy though...

[7_ws6ta_9]

try grand cherokee or new wranglers, might be close I know they are 5 on 5

[Apogee]

True 13" x 1.25" or would 12.8" x 1.26" work? That's a standard C5/C6 front rotor size. Depending on the diameter of the hub flange you're using, you may be able to get away with a modified C5/C6 rotor like many of the aftermarket big-brake companies include with their late model B/D-body kits (KORE3, TCE, Baer, etc). What center bore do you want/need?

Nice thing about the C5/C6 stuff is that you've got a lot of options...everything from dirt cheap to high end performance 2-piece blingers.

Otherwise X2 what chicane67 said, 2-piece it and choose from the available offsets.

[RAMKAT2]

Thanks for the help guys. I looked at the C5 vette stuff, but since the C5 rotor doesn't have much offset, the vette caliper will not clear the 17" 200S wheels I want to use. I contacted American Racing about it, and they actually sent me a pdf file with a drawing showing a section through the wheel, hub, rotor,and caliper assembly that indicated where the top of the caliper would hit the inside of the wheel. If the rotor had another inch of offset toward the center of the car, everything would clear. I really don't want to run a spacer, although I did consider running the C5 rotor on the backside of my hub instead of the outside, using the wheel studs to hold the rotor in place.
I didn't want to go to the hat/rotor combo unless I had to, simply because I wanted to be able to buy stock replacement parts when it was time to replace the rotors, and I didn't want to have to screw with all the safety wire on the bolts every time I worked on it.
I may end up just using 12" rotor/hub assembly's from a 80's Caprice H. D. Police setup, or a 71'-76' Riviera or full size Buick and living with it. Believe me, they are still much better than aluminum front drums on a 4500 pound car. Later, Randy

[dannyho]

the cherokee srt-8 rotors are 14.2 and 13.9 with a 5x5 pattern.

[andrewb70]

Another point to remember is that rotors must be hubcentric.

Andrew