Pulsating feedback on brake levers When on the I brake I get a pulsating feedback on my rear brake lever. I checked to make sure the wheel is true, and also the dish, which is ok.I re-checked the torque on the caliper bolt and adjusted it to 9Nm. The tire also has no bumps that I can see or feel. Any ideas?
After the discussion in the comments, I suspect that the rim is deformed. 

This can happen if you hit a pothole or kerb too hard, especially if the tires are not pumped up hard.

If the rim is deformed then you may be able to see patches where the brakes have worn the rim more. It's the brakes grabbing on these that create the feedback you are feeling.

There is not much to be done about it. Some people try to straighten them using a wooden mallet, but the success rate is low. Often the wheel is worse rather than better.

To avoid this kind of damage in future try to get your weight off the wheel as it hits the bump, by getting out of the saddle and moving back as the front wheel hits, then moving forward before the back wheel hits.