When the roof is mounted, the
volume of the
boot reaches 335 litres (11.8 cu ft.)(Z4 — 310 litre or 10.9 cu ft), but with the roof down, the
volume is
reduced by 110 litres (3.88 cu ft.) down to 225 litres (7.95 cu ft)(including the 51 litres (1.8 cu ft.) reserved for the spare wheel, if one chooses the Tirefit system).