Depending on rim width tire will have the following exemplary dimensions when mounted and inflated:
ca. 100 mm on 80 mm wide rim
ca. 110 mm on 100 mm wide rim
( on photos tire is on 80 mm wide rim )
Overall diameter depends on rim width and pressure:
Before ordering, please check available space in your frame and fork for wheels with tires. Most classic ready frames do not have sufficient width to accommodate such wheel. Tire is wider than usually used hubs , please check do You got right one.
On our sites we publish information about the width between the fork pipes.