of W2 class trams were sold to private owners or overseas, 26 W2 and 5 SW2 class trams are preserved by heritage tramways in Australia and New Zealand. W3 The W3-class trams were built between 1930 and 1934. These were the first trams to use an all steel frame. There were 16 trams built at Preston Workshops. They were built from parts and equipment which had been intended for building Y1-class trams. They had larger wheels, 33 inches in diameter, which were designed to provide a smoother and quieter ride. These wheels came from scrapped S and T class trams. These larger wheels made the tram body sit higher, and the floors in the drop centre were ramped to reduce the step into the saloon. During the 1960s the trams developed cracks in the frame which held the motors and all were withdrawn from service by 1969. Four W3 trams (661, 663, 667, 668) are preserved by heritage organisations. Preserved car W3 661 was damaged in an accident involving a motor vehicle on 10 March 2019 in Ballarat. The damage from the accident means that the tram requires extensive repairs to the frame and body. W4 There were five W4-class trams built between 1933 and 1935. They had a wider body and lower floor than the W3, and had transverse seating in the saloon. They were all withdrawn by 1968. The wider body of the tram meant the drivers found it difficult to see the steps. Four W4 trams (670, 671, 673 and 674) are preserved by heritage tramways in Australia. CW5/W5/SW5 Five CW5-class trams, numbered 681 to 685, were built at the Preston Workshops in 1934/35. They had wider bodies, based on the previous W4-class, but utilised electrical equipment recovered from scrapped Maximum Traction C class trams (hence the "C" prefix). They were the only W-class trams with only 2 motors (instead of 4), and were not considered successful. Fleet numbers 686 to 719 were reserved for 34 more of the type using equipment from the remaining C-class trams, but no more were constructed, and all CW5s were converted to standard W5-class trams in 1956. In 1935, the first of 120 W5-class trams entered service, with the same body as a CW5-class tram, but were equipped with equal-wheel, 4-motor bogies based on those used on the W3- and W4-class trams. Production continued until 1939 and included five CW5-class trams