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_15327489_1 ( class VARCHAR, riders VARCHAR, races VARCHAR )

### Question ###
Name the class for makoto tamada and races is 17

### Accurate SQL ###

SELECT class FROM table_15327489_1 WHERE riders = "Makoto Tamada" AND races = "17"