Assertion: tractor's track | /r/HasProperty | 21 inches
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Source sentences:
text: Introduced after WWII, the M5A2 High-Speed Tractor and M5A3 High-Speed Tractor were updated M5s and M5A1s with a horizontal volute spring suspension system instead of the original vertical volute spring suspension and a new tracks that were 21 inches (53 cm) wide compared to the older tracks that were 11.625 inches (295.3 mm) 11 5/8 inches wide.