About an hour ago I managed to make my best car so far, and for this I only followed one simple rule:
I am not watching what is green and what is not, I am watching which stats are changing. Example: intake +2kW, 0-97 km/h reduces from 5.391s to 5.344s, 0-161 km/h 15.905s to 15.734s. Simple, is it not?
Here is where the things starts a little interesting. For an example, 1974 Sandman HQ Panel Van. Bigger wheel means more weight, more weight means less acceleration, top speed, etc., that is why everything is red if I want to put on wheels with bigger diameter.
With stock wheels (205/70R14) 0-97 km/h is 5.406s and 0-161 km/h is 15.940s, overall weight is 1427 kg.
205/65R15 5.406s and 15.957s. Great!
205/60R16 5.406s and 15.974s. Awesome!
205/40R19 5.391s and 15.905s. What? And even better top speed? The weight increased to 1435 kg. What about the next?
205/35R20 5.391s and 15.940s. Almost back to the start, yet still an improvement. Aside from Speed the tooltip is red, shows everything as relapse, even though every stat is equal or better than on the same as on the stock one.
Another example: 2014 Ford Ranger T6 Rally Raid, flywheel.
With stock flywheel 0-97 km/h is 6.510s, 0-161 km/h is 13.917s. The race flywheel is 7kg lighter compared to the stock, and is shown as an improvement, yet in reality is actually worse - at least in acceleration.
1997 Mazda RX-7
With FH Race Rear Wing 0-97 km/h is 4.154s and 0-161 km/h is 8.662s, top speed is 367.5 km/h. If I would put on a Rocket Bunny wing, it would increase top speed drastically and decrease acceleration, and whilst the acceleration decreases indeed, the top speed follows its steps and also decreases. The Race Rear wing is in its stock state, was not adjusted.
And the list just goes on.
As I am new to Forza series, are these normal, are there any complexity behind them, such as “you did not take XY into account”, “ZX is a major factor, so…”, or some tooltips are really incorrect and misinforming?