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_25 (laps VARCHAR, grid VARCHAR, constructor VARCHAR, driver VARCHAR)

### Question ###
How many laps were completed by Piers Courage when BRM was the constructor and the grid is larger than 8?

### Accurate SQL ###

SELECT COUNT(laps) FROM table_name_25 WHERE constructor = "brm" AND driver = "piers courage" AND grid > 8