Editing a Swept Paths & Swept Path Table
After finishing a Swept Path and seeing that it doesn't quite fit, you can edit it.
Right Click the Swept Path and change it to edit mode.
Black larger dots will appear on the Steer Axle at the Vehicle Stamps along the path. Click and drag these to alter the path. When editing the path you will see lines towards the turning center. If it is red it just means that the turn of those axles have not reached steady state yet.

Swept Path Table
At the bottom left of the screen, the middle button shows a summary of numerical details of the Swept Path.

If a Swept Path is selected, it will only show the segments for that path, otherwise it shows all paths. Any cell highlighted blue is editable so this is also another way to edit Swept Paths.