I'd start with equal preload and equal end-to-end lengths between the L&R front, and L&R rear assemblies (only makes sense, right?). I'd be *very* careful adjusting ride heights after that in order to minimize the effects on cross-weights. If you just adjust one corner, you are definitely impacting cross-weights and corner-balance. Depending on what the ride heights look like, you really need to strategize how to adjust corners to get desired heights without impacting corner weights.

I only corner-balanced my FD once, when I got the Ohlins coilovers for it. Installed them and cross-weights were within 15 lb., done! Should always be that easy...

 

its like Mazda built it on corner weight scales, the miatas are good too

 

qualified no. we're only running Hoosiers, and we're only testing in the dry, and we're only testing a small range of pressures, relatively.

but in those circumstances more pressure = higher temps.

or i should say that the tires came up to a more ideal temp, we were having trouble getting them hot enough. MORE pressure, temps went into the happy zone. tire will give you more performance longer.

so try it. i suspect that this phenomena works on a curve, way too low = hot, too low = cold, just right = just right. too much, then could go either way.

 

Very much this. It is SO EASY to screw up crossweights with spring adjustment. Look at it as simple trigonometry, a given corner is maybe 50" from the other side but 100" from the back on the same side. So adjusting one corner will change the height twice as much on its end as it does on its side. And that is even before you factor the sway bars! This was hammered into my head the first time I had to adjust ride height on a torsion-bar Chevy truck. Hitting one side made the whole front end come up. Of course this spooked me, because I knew it did awful things to crossweight, and I couldn't do anything but count turns and change the other side equally...

As for your other comment, Mazda made several million 1st-gen RX-7s that sat much lower on the left than the right, even when everything was "perfect"... Ignore the ride height, look at the scales.

 

My FC with stock suspension has a lot of understeer especially in the rain. Do you have sway bars you can adjust to increase rear roll stiffness or decrease front stiffness?