Disc Brakes Rubbing

[chip]

Only done about 30 miles so far on my new Carerra subway 2 but both brakes keep rubbing. I'm able to loosen the front brake and realign the brake for awhile to stop it rubbing however the rubbing comes back. The rear brake rubs no matter what I do, have also tried pushing the pistons back. Both discs look straight on a visual inspection. They only rub on a small part of one wheel spin.

Do I just need to ride it more for the brakes to bed in and also wear down some of the pads?

 

[DEFENDER01]

Only done about 30 miles so far on my new Carerra subway 2 but both brakes keep rubbing. I'm able to loosen the front brake and realign the brake for awhile to stop it rubbing however the rubbing comes back. The rear brake rubs no matter what I do, have also tried pushing the pistons back. Both discs look straight on a visual inspection. They only rub on a small part of one wheel spin.

Do I just need to ride it more for the brakes to bed in and also wear down some of the pads?

With only 30 miles i would think you need to bed them in.
Hard downhill braking to get the brakes up to temperature should bed them in.

 

[vickster]

Take it back to Halfords, get them to check it over in advance of its 6 week service. Then ride it more and take it back once you've done 100 miles or so

 

[cyberknight]

My subway discs rubbed too, it took a fair bit of fettling to get them right .If your not sure take it back and get them to do it .
I had to realign the pads by loosening the mounting bolts then applying the brake , then adjust the inner pad which is static on mine and then adjust the cable for the moving pad .
Then i had to use disc brake cleaner to stop the terrible squeaking .

 

[cyberknight]

mm are yours hydraulic ?, says so on halfords website .

 

[chip]

With only 30 miles i would think you need to bed them in.
Hard downhill braking to get the brakes up to temperature should bed them in.

Thanks will try this next time im out.

mm are yours hydraulic ?, says so on halfords website .

Yup they are hydraulic, is there something else I should be doing to align hydraulic brakes?

 

[chip]

I'd take them back, as people have suggested, and get Halfords to adjust them...simply because the bike is new. You could adjust them yourself as Cyberknight suggests, but why should you, if you've just bought the bike? - here's a vid clip showing how this adjustment is done

Thanks that video is exactly what I was doing to adjust them. I will take it back if there's nothing left to try apart from putting some more miles on it to get them to bed in.

 

[cyberknight]

I dont know about hydraulic , i have only adjusted cable discs so im not sure tbh .

 

[Bonus]

Only ever had a rub when the disk was very slightly kinked. 30 miles isn't far though - the pads are still brand new.

 

[Nibor]

New disc pads always need proper bedding in
http://www.bikeradar.com/gear/article/how-to-bed-in-disc-brake-pads-31337/

 

[I like Skol]

New disc pads always need proper bedding in
http://www.bikeradar.com/gear/article/how-to-bed-in-disc-brake-pads-31337/

Pads do need bedding in but there is still no reason for them to rub, even when new. Correct alignment is separate to pad/rotor condition. Take them back and get Halfords to sort it out. It could be rotors that have been bent before the bike was sold!

 

[JtB]

I had a Claude Butler mountain bike and from day 1, if I adjusted the back brake not to rub with the wheel perfectly seated then within a few miles the brake would be rubbing again. If I then readjusted the back brake not to rub again but WITHOUT reseating the back wheel again it would be fine.

In the end Claude Butler replaced the bike and I never had another problem adjusting the back brake. I subsequently found out that this problem is not uncommon with cheap bike frames.