No secrets! When I got the car at 50k miles it appeared to be well cared for, and I cared for it since I got it! Just used leather cleaner/conditioner.
2007 Z4m coupe
69,200 miles
Runs like a champ, no issues.
Completely stock except for bmw performance pedals and shift knob, and black vinyl roof
1 of 212 in Titanium Silver
1 of 1815 Z4m coupes in the USA
Premium Package, Cold Weather Package (heated seats)
AC blows very cold, Heat works...