speedy300Dturbo is right, rubber mostly wears with age, not mileage. If the 400K is almost entirely highway mileage, and I imaging it is, then the suspension and the rest of the car could still be in good shape.

__________________
2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL