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_70 (tyres VARCHAR, class VARCHAR, year VARCHAR)

### Question ###
Which tires were in Class C in years before 1983?

### Accurate SQL ###

SELECT tyres FROM table_name_70 WHERE class = "c" AND year < 1983