Total days from order to delivery = [No. of days given by dealer when deposit taken] + 30 days + (6 x
b)
where
b is bullsh!t factor and ranges from 0 to 10
For me it's 60 + 30 + (6 x
b) = 127 => My dealer's bullsh!t factor is 6.2
N.B. Even if your dealer has a bullsh!t factor of 0, your original estimate will still be optimistic by 1 month