a problem occured on my bike.
It's a 2014 GL1800 on 23.000 km on taco.
Since now I did not have any issues on brakes.
When the peds are worn out the delaer offered me to replace them with Brembo brake pads. I said Ok.
They installed them and after a while the whistle noise started to come when braking.
They replaced them again but the same noise happened and I decided to replace them with OEM brake pads.
The OEM pads are installed I took the bike and there is the problem.
When I apply rear brake the bike vibrates, shakes, wobble I dont know how I can describe in English.
Next day I returned to the dealer they checked the bike and said that the old brake peds damaged the rotor and they replaced it by themselves.
After the rotor was replaced I took the bike.
There must be no problem now, pads are brand new and OEM, rotor is brand new and OEM.
I ride the bike everything was OK but when I use brakes in city traffic and the system ghets heated the vibration came back on rear brake.
I tried it and found that when the system is cold there is no vibration, when it gets hottter it vibrates on rear brake.
So I went to dealer. They found that the rear rotor is extremely hot and its color is near purple because of over heating.
They took out the rear master cylinder, take the air out in the system, replaced the brake fluid and I took the bike again.
Tried it with cold and hot brakes and there is no problem.
For 2 days
after 2 days past these operations the problem occured again, not on every rear brake use but sometimes it happens.
It only happens when I apply only rear brake. If I brake both front and rear It doesnt happen.
What you suggest me.
By the way, a few months ago my bikes rear master cylinder was replaced under warranty byt the call of Honda.