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When to replace slotted rotors?

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Old 04-28-2019 | 03:07 AM
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Default When to replace slotted rotors?

Was putting in new studs this evening and am curious how long you let your rotors go before swapping to new rings?
Starting to get some cracks but none near the edge yet.

Last edited by 911mhawk; 04-28-2019 at 03:09 AM. Reason: add pic
Old 04-28-2019 | 10:16 AM
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I change mine around that level of cracking. When I was hitting the track a lot in the past, I did run them lower. But with 5 kids and one more on the way, I no longer see the benefit vs potential risk. ha!

The level of usage you have out of those seems pretty good.

-td
Old 04-28-2019 | 10:44 AM
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I'd be calling those done
Old 04-28-2019 | 11:03 AM
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Measure the thickness. Minimum is 28mm. They are probably quite close.
Old 04-28-2019 | 01:15 PM
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Replace them now. The cracks are towards the top of the rotor. They are done.
Old 04-28-2019 | 01:29 PM
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Yep, agreed with everyone, time to replace.
Old 04-28-2019 | 05:27 PM
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Looks like a band of color on the rotor as well, which tells me they are cooked.

Replace pads as well or sand them flat so they don't groove the new rotors.
Old 04-28-2019 | 06:41 PM
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Originally Posted by himself
I change mine around that level of cracking. When I was hitting the track a lot in the past, I did run them lower. But with 5 kids and one more on the way, I no longer see the benefit vs potential risk. ha!

The level of usage you have out of those seems pretty good.

-td
5 and one on the way! Congrats! Got four myself (ages 5-17!)
Old 04-29-2019 | 02:58 AM
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Thanks for the replies, figured they were getting close to done, will be replacing,
Old 04-29-2019 | 03:13 PM
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Originally Posted by Marv
Looks like a band of color on the rotor as well, which tells me they are cooked.

Replace pads as well or sand them flat so they don't groove the new rotors.
Good point. PFCs pads are awesome, surprised how long they last compared to the rs29s I'd always run in the past.
Old 04-29-2019 | 06:32 PM
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done- giro disc?
Old 04-29-2019 | 11:28 PM
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Default Love GIRO

Originally Posted by Gofishracing
done- giro disc?
The $1,200 GIRO 350mm front starter kit, includes rotors and hats, is a bit steep in my estimation. I suppose the good news is that the GIRO replacement rotors are a mere $800, add in the labor to break down the old rotors from the hats, then the labor to attach the new GIRO rotors to the old hats, you are looking at 2+ hours of labor. Let's say $100 an hour for labor.....now the cost to replace the rotors is at least $1,000. Are there any cheaper options?

Now that GIRO front 2 piece are getting a little "long in the tooth", thinking of going to Serbo 350 mm slotted front rotors, for all intents and purposes, Cayenne S front rotors. Probably much cheaper than the GIRO. May try the PFC pads with the new SERBO rotors, but do love my Pagid Yellows. I do have the Serbo 997 Turbo 350mm slotted toreros on the rear, and they have been spectacular.

I'll post up the info I get on the SERBO front rotors as it becomes available. if I don't forget..

Last edited by Martin S.; 04-29-2019 at 11:46 PM.
Old 04-30-2019 | 09:06 AM
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my sebro slotted rotors with pfc 08s have tremendous life. 17 days with heat checking that is only starting to get to a moderate level.

run them.
Old 04-30-2019 | 09:36 AM
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For solid slotted rotors on front I still choose Deman. Sebro scare me for fronts. For 2 piece I'd go Essex AP hook I think. I hate Giro Disc. personal. I got screwed by them during a transition & the make good sucked.
Old 04-30-2019 | 04:55 PM
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Originally Posted by Martin S.
The $1,200 GIRO 350mm front starter kit, includes rotors and hats, is a bit steep in my estimation. I suppose the good news is that the GIRO replacement rotors are a mere $800, add in the labor to break down the old rotors from the hats, then the labor to attach the new GIRO rotors to the old hats, you are looking at 2+ hours of labor. Let's say $100 an hour for labor.....now the cost to replace the rotors is at least $1,000. Are there any cheaper options?

Now that GIRO front 2 piece are getting a little "long in the tooth", thinking of going to Serbo 350 mm slotted front rotors, for all intents and purposes, Cayenne S front rotors. Probably much cheaper than the GIRO. May try the PFC pads with the new SERBO rotors, but do love my Pagid Yellows. I do have the Serbo 997 Turbo 350mm slotted toreros on the rear, and they have been spectacular.

I'll post up the info I get on the SERBO front rotors as it becomes available. if I don't forget..
Martin - its SEBRO. Not serbo. There are multiple posts and threads on the price differential between SEBRO rotors and Girodisc. Its well documented.

Can you explain what a "slotted Torero" is?


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