CREATE TABLE table_70492 ("Year" FLOAT, "Chassis" TEXT, "Engine" TEXT, "Tyres" TEXT, "Pts. \\u2021" TEXT)

What tyres were used with the mp4/14 chassis?
SELECT "Tyres" FROM table_70492 WHERE "Chassis" = 'mp4/14'
SELECT "Tyres" FROM "table_70492" WHERE "Chassis" = 'mp4/14'