I've read a couple of posts on the forum about tire pressures, and I'm not sure what the best setting to go for is. Carrera S 19 inch wheels....I really don't anticipate carrying much luggage (not sure where you'd put it...a bag of groceries and the trunk's full). I've never seen a car with such a wide variance in tire pressure setting depending on loaded/unloaded

19 inch wheels, partially loaded
front 33 psi (up to 2 persons without luggage)rear 39 psi
19 inch wheels, fully loaded
front 36 psi (as of 2 persons with luggage) rear 44 psi

Which setting would give the best handling characteristics... Could someone tell me the advantage/disadvantage between low inflation 'v' high inflation

Thanks