Comparing: Object 263 vs. T110E4

The development of a heavy tank destroyer on the basis of the IS-7 heavy tank was started in 1950. Three design projects were developed, one of which resulted in a full-size wooden prototype. However, further development was discontinued due to phasing out the IS-7 mass-production.

In 1954, a conference on future heavy tanks was held in Detroit. Alongside other advanced projects, the Chrysler Corporation suggested a new tank on the basis of the TS-31 project. The main goal was to make the tank fit the Bern national tunnel. Several variants were considered, but the project was canceled.