How to redefine / override the default breakpoints in a Bootstrap sub-theme
There doesn't currently seem to be anything in the Bootstrap theme that supports this directly, and the theme doesn't appear to listen to anything in the Breakpoints module. The bootstrap breakpoints are hard-baked into the JS and CSS.

If you're not using LESS, this means the only realistic option is to override the CSS and JS with custom local files. I had a bit of trouble with this at first but it seems to be fine and doesn't seem to conflict with anything in the server-side theme code.


Create a customised version of Bootstrap with your breakpoints and other preferences, from http://getbootstrap.com/customize/
Install the module Bootstrap Library
Upload the custom bootstrap files to sites/all/libraries/bootstrap
Disable everything to do with CDN in your theme settings page