Quick brake question

Ambar · June 8th, 2011, 07:16 PM

I took my first ride with Jeff today and while looking the bike over, noticed that the rotors had slight grooves. I know that with cars, the rotor is supposed to be completely smooth, but didn't know if the same held true for bikes.

kkim · June 8th, 2011, 07:17 PM

yes, sometimes there are grooves. a picture would really help to determine if you have a problem or not.

Ambar · June 8th, 2011, 07:19 PM

I will take a picture and post it tomorrow. The grooves are very light, not deep at all.

kkim · June 8th, 2011, 07:21 PM

I think you'll be fine. Post a pic when you have the time to confirm, though.

Ambar · June 9th, 2011, 12:47 PM

I took a picture, but I think I'm going to have to let Jeff post it.

It's more a curiosity, and trying to learn bike maintenance, thing than anything else. If it were a car, I'd say the rotors were starting to need to be ground, but I know very little about bikes.

Ambar · June 9th, 2011, 01:13 PM

rotor 1 by Havok3c, on Flickr

rotor by Havok3c, on Flickr

Here are the pictures of the rotors.

kkim · June 9th, 2011, 01:25 PM

the grooves don't look too bad, but I see quite a bit of wear as to the thickness of the rotor. The minimum thickness is stamped on the rotor somewhere. check to see how close you are to that measurement.

did someone install aftermarket front brake pads on the bike?

June 8th, 2011, 07:16 PM	#1
Ambar ninjette.org member Name: Sharon Location: Torrance CA Join Date: Apr 2011 Motorcycle(s): green ninja 250 Posts: 69	Quick brake question I took my first ride with Jeff today and while looking the bike over, noticed that the rotors had slight grooves. I know that with cars, the rotor is supposed to be completely smooth, but didn't know if the same held true for bikes.

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June 8th, 2011, 07:17 PM	#2
kkim Join Date: Nov 2008 Posts: Too much.	yes, sometimes there are grooves. a picture would really help to determine if you have a problem or not.

June 8th, 2011, 07:19 PM	#3
Ambar ninjette.org member Name: Sharon Location: Torrance CA Join Date: Apr 2011 Motorcycle(s): green ninja 250 Posts: 69	I will take a picture and post it tomorrow. The grooves are very light, not deep at all.

June 8th, 2011, 07:21 PM	#4
kkim Join Date: Nov 2008 Posts: Too much.	I think you'll be fine. Post a pic when you have the time to confirm, though.

June 9th, 2011, 12:47 PM	#5
Ambar ninjette.org member Name: Sharon Location: Torrance CA Join Date: Apr 2011 Motorcycle(s): green ninja 250 Posts: 69	I took a picture, but I think I'm going to have to let Jeff post it. It's more a curiosity, and trying to learn bike maintenance, thing than anything else. If it were a car, I'd say the rotors were starting to need to be ground, but I know very little about bikes.

June 9th, 2011, 01:13 PM	#6
Ambar ninjette.org member Name: Sharon Location: Torrance CA Join Date: Apr 2011 Motorcycle(s): green ninja 250 Posts: 69	rotor 1 by Havok3c, on Flickr rotor by Havok3c, on Flickr Here are the pictures of the rotors.

June 9th, 2011, 01:25 PM	#7
kkim Join Date: Nov 2008 Posts: Too much.	the grooves don't look too bad, but I see quite a bit of wear as to the thickness of the rotor. The minimum thickness is stamped on the rotor somewhere. check to see how close you are to that measurement. did someone install aftermarket front brake pads on the bike?