After tinkering around with the HDT Commodore a little more, I ended up setting the rear tire pressure down one more psi. Just enough to keep stability and a decent amount of grip. Settled with 32.5F/25.5R cold. Going to be bringing it out on F-F-A Adventures and seeing what positions I can get.
Thanks for the tips, now I can actually touch the tire pressure without being bothered by the feeling that I’m doing something wrong, the car is slower, etc.
Wait a second… Temperatures matter in this game?
Do your own testing! Is is faster? Is it more intuitive to drive hard on new roads or in sketchy situations? That’s what matters.
I don’t think so… I tune my cars so I can smash around any given course with minimal drama and maximum speedz. That’s about it. Adding camber for more even temps usually increases drama, so I stick with -1 to -2 on 99% of cars. If I was on a wheel it might be different.
So I took it out on an online adventure and quickly figured out that the car understeered a little more than I expected it to, so I took a look at the spreadsheet and tweaked my setup based on the results I got from it (I wasn’t too far off of the spreadsheet results already except for maybe the rear spring rate), and the understeer situation improved (Not completely, but I expected that since it is a front-heavy sedan with no aero). I’ll be looking at that spreadsheet every now and then, it’s pretty good!
You saved it to your Google drive, right?
It’s handy… it does the same math I was doing on my phone calculator with less work. The first version I made was intended as a “base tune generator”, with fields for car weight, spring multiplier, damper multiplier, ARB multiplier, etc… those proved to be more of a nuisance than anything. That’s why the current version simply accepts weight distribution, chosen front spring rate/ARB/damper/bump ratio, and balances the opposing rates/coefficients accordingly.
Many cars, with race bracing, like perfectly matched springs, within 0.1% mirroring weight distribution. The game only tells us the weight dist. to an accuracy of 1%. Where the spreadsheet says min/max rates… that’s the high and low 0.5% in either direction from the “front weight %” field value. If Forza says 52%… the car could be 51.51% front, or 52.49% front. The indicated matched rates span that window.
Part of it has to do with gamepad steering. It is often happiest with balanced rates. Rigid-thinking and sluggish…