I am kinda jumping in here, with a similar question....

So at what mileage would you typically rebuild the front end or install new suspension components. I just did a complete front end rebuild, shocks / springs, control arm bushings and ball joints, tie rods, etc..... on my 79 Chevy...at 21 years and 80K miles it needed it badly ( I know not same car ) , but my point is at what mileage/ age would you start feeling the deterioration of these components?