Braking power GL1500

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probably needs new lines. they are expanding way too much and not enough pressure is going to the caliper, what year is your wing?

have you used a vacuum pump to bleed the brakes?, there is a trick, sometimes bubbles get stuck in the banjo bolts, so wrap them with rags and while pulling the lever open and close the banjo bolts, just be careful not to drip fluid on the paint.

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The brakes on a Wing do take some getting used to but you will.
Like William_86 says, these bikes suffer from weak hoses as they get older. I had the same problem and changed mine to the metal braided Goodridge hoses and there was a real difference.
If there is a small air bubble in the system, try usind a zip tie or similar to hold the brake lever tight, turn the handlebars so the master cylinder is at the high point and leave it overnight. Any air should work its way yo the top of the system

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Its a 98SE with 14K miles on it. The rear brake combined with the left front seem fine.

I also power bleed the heck out of them when I changed the fluid and even rechecked it after 250 miles.

Steel lines are better at flexing but for the street they have their draw backs. As a performance / track vehicle they are certainly preferred over rubber. Inspections on ss lines is also difficult. However, having said that I had already put seriously considering that on my winter list.


A strange thing yesterday after a nice day of riding I have noticed that when I apply the foot pedal, the front left brake sounds like its sliding. Sort of like a lightly rusted rotor on a bike thay got wet and then was not ridden for a while.

Except it did not get wet and it started in the middle of a ride right after a short break.

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Sounds like you may need to clean the pistons. If it has been riden in dusty conditions they are more than likely cloged with dust.