mean (or average) age
Good to hear that there's a wide range of ages & experience...
I just might check it out, depending on weather etc. etc.
2007 e90 328i Monaco Blue
aFe Magnum FORCE Stage-2 Si Pro 5R CAI
RIP '84 e30 325e, '87 e30 325e, '96 e36 328i and 2000 e46 323i