Rusty wishbones on newish car

[MajorClanger]

Just how rusty should the wishbones on a 3 year old Chimaera be? Having a look at the front ones this weekend, I was disappointed to see that there was not much paint left on them and that they were rustier than my 11 year old Citroen's! Is the paint finish affected by heat from the exhaust? or is this just stone chips and road salt taking its affect?

Haven't TVR worked out how to keep the paint on (better still the rust off) yet?!!

MC