Are Zimmerman Rotors directional?

[Ladydragonz]

Just finished putting on my rear rotors and I'm so confused if they are directional. Either way I put it one will be pointing towards the back of the car and one towards the front. Does anyone have any experience with this! Thanks

[tracer bullet]

Originally Posted by Ladydragonz

one will be pointing towards the back of the car and one towards the front.

I think that answers your question, you don't have any options and don't order 1 left and 1 right.

It's a good question though and observant. Long ago on another forum I was a moderator on we had this question come up a few times, and in the end it didn't seem to matter about directions. Vendors said so when asked, and looking long enough for pictures of rotors set up on more expensive cars from the factory showed them going both directions as well.

[gjm120]

Originally Posted by Ladydragonz

Just finished putting on my rear rotors and I'm so confused if they are directional. Either way I put it one will be pointing towards the back of the car and one towards the front. Does anyone have any experience with this! Thanks

Rotors are directional if the vanes in the ventilation gap are angled a certain way. I have Stoptech directionals on the front of my car and it was clear which side was meant for what.

[gjm120]

This video explains it pretty well.

[Ladydragonz]

Originally Posted by gjm120

Rotors are directional if the vanes in the ventilation gap are angled a certain way. I have Stoptech directionals on the front of my car and it was clear which side was meant for what.

Originally Posted by tracer bullet

I think that answers your question, you don't have any options and don't order 1 left and 1 right.

It's a good question though and observant. Long ago on another forum I was a moderator on we had this question come up a few times, and in the end it didn't seem to matter about directions. Vendors said so when asked, and looking long enough for pictures of rotors set up on more expensive cars from the factory showed them going both directions as well.

Yea mine isn't clear and I don't think they are my last ones were so I was so confused. Guess everyone makes them different. Next brake job I do eventually will be stoptech

[135ivert]

Originally Posted by gjm120

Rotors are directional if the vanes in the ventilation gap are angled a certain way. I have Stoptech directionals on the front of my car and it was clear which side was meant for what.

I think the StopTech were even different part numbers IIRC.

[gjm120]

Originally Posted by 135ivert

I think the StopTech were even different part numbers IIRC.

That's right. There is suffix L and R on the numbers of the ones I ordered.