Hey I know engines can be rebuit and replaced, but is it possible that a car can have too many miles on the frame and body itself? Will it ever come to a point where you had to "rebuild" or just get a new car?

 

It's a question of economics. There are certain parts of a car that are hard to kill, unless they rust badly or you damage 'em in an accident. Even then, you can often find replacement pieces (like subframes) at a junkyard for not much money. "Wear and tear" is rarely a reason to ditch the entire car.

 

Well the main reason I ask is, Ive seen alot of cars that have 60K on the car and motor or 100K+ on car and new motor, just dont know if the new motor is a benefit if I will be starting out with a car with 100K + and I plan to keep this car till I die :P

 

The benefit would be drive train components. Suspension parts as well as bushings,balljoints and Power plant frames, Brake calipers etc etc. Lower miles isnt just a matter of miles on the engine. There is less to worry about with a low milage car regardless of the condition of the motor.

 

Over time, rust and collision damage are the main things to worry about on steel unibody cars. Rust can become very expensive to repair when it gets into the chassis, and collision damage can be very difficult to put back exactly as it should be, especially on a car with such exacting handling standards as the RX-7.

 

zoomzoom: Is there a certain number of miles at which you have to start watching for these, I mean like the unibody and power plant frame and stuff. Do these cars usually see 200K (not tlaking about motor ot turbos)?