I get a slight vibration on the highway when braking from about 100 km/h (±60 mph), just touching the brakes. Seems to not occur whenever I brake hard. Otherwise around town all is fine.

I had the brakes changed not too many miles ago, and had the problem before the new brakes which seem to have cured it.

So I begin to suspect the discs rather than the pads. Can that be checked ? Any other possibilities ?

Thanks,