Let's use an example:
1969 Camaro; stock suspension (5-inches travel front; 5-inches travel rear)
1969 Camaro; coil overs (5-inches travel front; 5-inches travel rear)
There is only one thing potentially different between these two cars. . .spring rate (and it may be the same).
So, if either car is set up for a ride height with two people (driver and passenger) and a plush ride (low spring rate), they may both experience bottoming out if enough weight is added to the vehicle (especially in the rear as the spring rate is lighter than the front).
Take the same two cars and put higher spring rates in them for a more performance vehicle, and the bottoming out will not be as severe when weight is added.
As you can see, if the travel remains the same there is virtually no difference as both cars have 5-inches of travel and springs holding them up.
Now, if you are truly concerned with changes in load affecting ride quality you need a coil over with an adjustable spring rate. . .which just happens to be our Shockwave unit. It doesn't care how much weight is on the vehicle as it can adapt to each situation.
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