Tabulous - Setting up full width Tabs
You can make the tabs full width, you just need to set the settings correclty.
Go to the Tabulous - Tabs setting and change the Sizing Dynamic to Sizing
Once you have that setting, you then need to divide 100 by the number tabs.
Now you will notice, 100 divided by 2 (2 tabs) does not equal 48%, you need to add some measure in there for padding. So, take 2% off of that number. For example, if you have 4 tabs, it would not be 25%, but 23%. If you have 3 tabs, it would not be 33%, but 31%. Enjoy