Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_31 (tyre VARCHAR, entrant VARCHAR, rounds VARCHAR)

### Question ###
Name the tyre for hb bewaking team ensign with rounds of 13

### Accurate SQL ###

SELECT tyre FROM table_name_31 WHERE entrant = "hb bewaking team ensign" AND rounds = "13"