/Thread Hijack.
With all due respect Alan, you've made the comment, IYHO, that everyone should go & buy the top quality tyre, even if it is more expensive, because they are safer, better road holding etc, etc.
Then you make the above comment of, put simply, cutting the springs down.
As I'm sure your aware, cutting springs is blatantly illegal in all states in Aus. And if done badly are a MAJOR safety issue.
(I've unfortunately seen the aftermath of a cut spring going AWOL... )
Just seams your making contradictory comments, Alan...
Also, in my personal experience with the lowered King Springs in my 2+2, they are .5mm thicker in the coil wire, then the std ones.
My bus was noticeably firmer after I fitted the springs. Perhaps 2 seater's are different?