CREATE TABLE table_58175 ("Entrant" TEXT, "Constructor" TEXT, "Chassis" TEXT, "Engine" TEXT, "Tyre" TEXT, "Driver" TEXT, "Rounds" TEXT)

Name the tyre for hb bewaking team ensign with rounds of 13
SELECT "Tyre" FROM table_58175 WHERE "Entrant" = 'hb bewaking team ensign' AND "Rounds" = '13'
SELECT "Tyre" FROM "table_58175" WHERE "Entrant" = 'hb bewaking team ensign' AND "Rounds" = '13'