CREATE TABLE table_1221 ("Year" FLOAT, "Class" TEXT, "Team name" TEXT, "Bike" TEXT, "Riders" TEXT, "Races" TEXT, "Wins" FLOAT, "Podiums" FLOAT, "Poles" FLOAT, "F.laps" FLOAT, "Points" TEXT, "Pos." TEXT)

Name the class for makoto tamada and races is 17
SELECT "Class" FROM table_1221 WHERE "Riders" = 'Makoto Tamada' AND "Races" = '17'
SELECT "Class" FROM "table_1221" WHERE "Races" = '17' AND "Riders" = 'Makoto Tamada'