NEW Roomba Models Compared i7 vs i7+ vs 675 vs 690 vs E5 vs 960 vs 980 - YouTube
Bouge 2 Pack Tires for IROBOT ROOMBA Wheels Series 500, 600, 700, 800 and 900 Anti-Slip, Replacement for All IROBOT roomba Models : Amazon.in: Home & Kitchen
Roomba model comparison chart (updated!) : r/roomba