Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_70 (tyres VARCHAR, class VARCHAR, year VARCHAR)
### Question:
Which tires were in Class C in years before 1983?
### Answer:
SELECT tyres FROM table_name_70 WHERE class = "c" AND year < 1983