how do i put air in the rear shocks on 2001 BMW M5

my rear shocks are low what can i do to fix the problem

Asked by for the 2001 BMW M5
Your M 5 doesn't have air suspension, the coil retainers that hold the coil springs in place sometimes slide past the retainers causing the spring to fall lower from the set point, have the rear shock and spring inspected for wear or broken retainers.