I can also do a number of other counter intuitive things that make the car faster, doesn't mean one factor is broken. Take a Integra Type R for instance and jack the front spring rate up to maximum and the rear spring rate to minimum, you'll probably run your best lap times with it and that is at ride height 0 / 0 with no offset. Spring Rates are not reversed, the whole tuning system has minimal influence on performance of the car. PD worked so hard to recreate the real world driving qualities of the cars and to virtualize their real world performance that every car is probably controlled by a greater set of constant variables that remain hidden and in the end the tuning menu was left to be minimally effective and buggy. They would either have to strip out the hidden variables hard coding the cars to a specific performance expectation or vastly overhaul their simplified physics system to accurately mimic the performance benchmarks of the cars in game while simultaneously offering fully accurate tuning options, both cannot co-exist in the current implementation.
Don't agree with what's highlighted, sorry.
Reason being is the 'Ring' at Cape Ring. I run a race series for road cars, sports tyres - 384bhp. First race was at Cape Ring, we had a 'pre-season' test session, alot of people were struggling to get round the 'Ring' art of this track without the back end stepping out or snapping on FR and MR cars (No assists allowed in race series).
Making some simple changes gave these cars alot more stability at the rear, so much so, they could all pretty much go flat out round the ring, only lifting the throttle to keep car from running wide, not spinning out like before, the back end was rock solid now - but people were now experiencing understeer at the front.
4WD cars, some of these have a very stable back end, by adjusting the rear ride height it's possible to 'loosen' the rear end and make the front end turn more, especially when lifting off the throttle. This, on certian tracks, can have quite an impact on a car's performance.
I know everyone has their own terminology and opinion, but I honestly don't feel as though 'minimal influence' is correct, I feel SOME changes in the suspension can have quite a big impact.