Here is a extremely quick way to make a 100% Wide Carousel in Axure!
See It Live: 100PercentAutoCarousel
RP File: 100PercentAutoCarousel.rp (219 KB)
1. Add a Dynamic Panel with multiple States. Set 100% Wide in the Widget Properties pane (shown above)
2. Enter each State, set the Back Image to and set Repeat to Stretch to Cover
3. On the Home Page add and OnPageLoad Interaction. Choose "Set Panel State" and select your Dynamic Panel and choose Next. Then set the timing and animation properties. Make sure that "Repeat Every" and "Wrap from last to first" are checked.
4. Preview the file. That's it! Your 100% Wide Carousel should be working.