Something I came across

I’m not sure this is of value to anyone; The weight of the car is always 41% of the upper spring rate of the car.
( Car_USR / Car_Weight ) = 41%
I thought it was interesting, I don’t think I ran across this in FM5.
The springs are much more predictable in H2.
Meow

So if my car weighs 3560 pounds, the upper spring weight will be 1460?

I this the stock set up? Do you need race springs for this to be true? Does it take into effect weight reduction upgrades?

As in my example above, if I add race weight reduction an drop to 3000 pounds, will it change the upper spring rate or will it remain at 1460?

I’ve found yes in all cases,

I wasn’t quite precise enough.
Lower Spring Rate = Car_Weight * 0.0518~
Upper Spring Rate = Car_Weight * 0.4145~

It gets you spitting close to what the game will throw at you.
I don’t know if it will speed up the tuning process for some.
It does make sense why the 3 minute tune gets you something that is drivable.
For what it’s worth, my intent is to give back to the community.
Meow.

I found the highest and lowest spring rates in Forza 5 by multiplying the car weight by 0.4144 (high) and 0.0518 (low).

I was curious how they came up with the spring rates and I checked them versus the cars weight. The first two cars were almost identical, but they were slightly different. Every car I checked was the same - slightly different, but in a narrow range. Later I discovered the unsprung weight was responsible for the variance.

0.4144 and 0.0518 were the averages of a bunch of cars and I found them very accurate for getting the numbers Forza 5 will be using. I haven’t tried them in Horizon 2 yet though…