My tests:
I just tried a quick test online with the RX-7 TC, tyre/fuel wear on, grip real, and had the tyre load indicator shown.
Equal Ride height: 0--0
The white circle didnt grow very big.
High Rear Height: 0--20
The rear white circles on the indicator were as big as they could be, right on the edge of the dark grey circle. This shows that the rear tyres are carrying the most load. The rear tyres had good grip on corner exit and I only spun the car if I went full throttle on the exit.
High Front Height: 20--0
The white circles on the rear tyre indicators were not as big as with the higher ride height, but they were bigger than equal ride height. In the corners I had to be really careful with my throttle control or the car would easily spin, mid-corner and exit.
So my opinion is that something is wrong. Having a higher rear should take load off of the rear tyres, but it appears to do the opposite.
Ok re-done the test with a higher ride height to prevent the suspension from bottoming out and causing the bumpers to take the load rather than the tyres.
Equal Ride height: 20--20
More load on tyres than at 0--0. More grip, more body roll.
High Rear Height: 20--40
Same as ride height at 0--20. The rear tyres had more load than the front, could be heavy footed with the accelerator and not worry about the rear tyres spinning, the rear was well planted.
High Front Height: 40--20
What I expected. The rear tyres had less load than with a higher ride height, which dont make sence. The car turned in much better and was quicker through the 1st section of Nurburgring GP/D by 0.5 seconds. You still had to be very light footed or you would easily spin out.
So now you know that the bumpers wernt stopping the tyres from touching the ground and the car wasnt bottoming out in my first test.
Setting the front of the car lower than the rear adds load to the rear tyres helping to keep them planted.
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It does not give the car tendancy to oversteer and add grip to the front tyres like it should. --
Setting the front of the car higher than the rear takes load
off the rear tyres, without making it bottom out, which causes the rear to lose grip and there fore oversteer.
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It does not add load to the rear tyres, pushing them into the ground, to increase grip and keep that end of the car planted, like it should. --
@TimberW
Yes I have also done this with small increments.
On one my S2000 setups for the Touge I have the front 2mm lower than the rear and this gives more grip at the rear and has less wheelspin.
On my S2000 R1 I have the front set -5mm lower than the rear and this also keeps the rear more planted.
But it also makes the the front push a little on some corners. At first on the R1 setup I had the Front -10mm lower than the rear and the front end felt heavy and the car would understeer, no wheelspin, just understeer on corner entry. Raising the front 5mm helped alot but on some occasions you can feel the understeer.
I saw no variation in load even though I changed springs and ride height each time, imma mess around with it more since I'm noob but could a few people test it out?
Did you not notice the white circles grew larger when the end of the car was higher?? This shows there is more load on that end.