Carrera front hub/rotor bolt circle question

[wjdunham]

Can someone confirm that the bolt circle for the bolts that mount the hub to the rotor are on a 126mm circle. I believe I found this on a spec. sheet somewhere but can't dig it up and want to make double sure. I am having some custom rotor hats made so measure three times cut once.

For extra credit, what is the bolt hole size?

Thanks in advance as always,

Bill

[pete3799]

130mm according to this
https://www.wheel-size.com/size/porsche/911/1969/

[Joe Bob]

5x130, our host carries the correct nuts. I prefer open top steel as opposed to the alloy nuts.

The alloy ones tend to fracture and you a hell of time getting the remainder off w/o fubaring the wheel. AND FOR GOD's sake don't use wheel locks.

[wjdunham]

Sorry, I didn't mean the bolt circle for the wheel bolts, which is indeed 5 x 130mm, but the bolt circle for the bolts in the inside of the hub that mount to the brake rotor.

Bill

[Joe Bob]

Maybe if you told us what is up? Did you lose them? You could always pull annother wheel and remove the bolt in question and measure it.

[wjdunham]

Originally Posted by Joe Bob

Maybe if you told us what is up? Did you lose them? You could always pull annother wheel and remove the bolt in question and measure it.

I'm putting together a rotor setup for my 964 caliper upgrade. I plan to share that all in a build thread once i get farther along. I'm having a custom flat hat fabricated, and using a Coleman Racing custom sized rotor. Here is the drawing for the rotor hat. I want to make sure the inner bolt circle is the correct dimension.

Bill

[donporfi]

I measured this hub. Rough measurement.
That bolt circle is 126mm.
Between centers 74mm, that gives us 126mm diameter.

[donporfi]

It uses 8 x 22 hex head bolts

[wjdunham]

Thanks!!! That's what I needed.
Bill