Round Table sizes:
180cm plus table = 900cm max size or 550mm
150cm table = 900cm at a push, 550mm better
120cm table = 550mm
100cm table = 385mm

Rectangular table widths:
90cm table = 385mm
120cm table = 550mm
100cm table = 385mm

Depending on length of table, multi Daisies
2.5/3m length table - a 385mm Lazy Daisy at either end