CREATE TABLE table_46105 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

Which lap has more than 17 grids with tetsuya harada?
SELECT "Laps" FROM table_46105 WHERE "Grid" > '17' AND "Rider" = 'tetsuya harada'
SELECT "Laps" FROM "table_46105" WHERE "Grid" > '17' AND "Rider" = 'tetsuya harada'