Well you gotta realize that Nurbgring is like THE ultimate road track there is..
It tests just about EVERYthing in a car... That might give you a heads up oat here im going with this..
What I can say as my first reaction for Touring cars is to simply leave it stock. I dont bothering setuping for specific tracks anyway, everything i do is off skill.
But however,Touring cars are like a downgraded version of LeMans.. so some stuff will need altering.
For Instance, The road all around is bumpier than normal, compensate by not lowering the car too much as well not to make the spring rates too stiff, otherwise, you'd get bottoming out and bouncy cars. This also applies to yours stabs and bounds/rebounds.. In addition to bottoming out and bouncy cars, dont put that TCS to 0 unless you are super confident, a rough bump can get your car to randomly swing out.
Also, Knowing that most of the cars you stated are FR's, the back will wear out a bit faster than the front?(sorry, i dont drive FR's anymore so i forgot.) Because of this you may want to stagger tire( i know you don't), but dont stagger your tires.. IF you HAVE to stagger to get the wearing out rates to be a bit more even, do that in B-Spec...Bob can handle it....
What else can I say.. Oh yes there is a LOT of tight turns, so dropping the understeer to 0 may stabilize your car during high speed bumpy jumpy turns but you also need to learn to steer acuratly and precisely, thus making both your ASM's to 0 may be a good idea.
Nurbgring, roughly 7 minutes a lap, you're tires need to last ,at least more than 2-3 laps, Don't do Super Hards (unless you can), because these lack the minimum required grip that suits this jumpy bumpy 7minute hella long track. Hard's are best all around in my opinion, anything more gripper than that will only last you one good lap. For your Road cars, maybe Hard Sports or Meds, Soft is too much for your lancer (because of all that understeer) and your GT-R.
as for buying parts,
Definitely grab hold of a rollcage to stiffen your car from any uncalled-for bumps that you encounter.
for your 4WD's take a VCD and turn the front wheel relatively low, but not all the way. Yes an FR-like car is better than an AWD here because you can definetly use the looser handling ( esp. for the lancer).
HP Boosters, A stage 4 Turbo would be a must, because there is that VERY long straight at the end of the track, and it sucks if you can't keep up with your opponents on that straight. The long straight is like the catch-up moment for me, because my cornering is not that great.
Clutches, Flywheels, Driveshaft, it's Mandatory, get those... as well as a full customize gearbox for that extra gear, try a setup that'll bring the ratios to be tight as well, allow a decent top speed( for that long straight). This part is probably hard to play with, because you need a good top speed. This means you'll overall have a lower accel rate. However, since you have all those tight turns, you'll need a good RPM picker-upper( with great torque as well). Maybe a tranny trick with a wider final gear ratio may be answer.
downforce, unles your car is light for its outpower power, you wont need to apply too much, (esp. GT-R & Lancer). You'll definitely need to apply some, if not all, to hold grip while driving at high speed as well when cornering.
LSD, ask someone who knows, jsut dont lock up you car when doing corners and not to make the car TOO stabilized.. or you can jsut leave it stock..
NOS, i discourage you from using it unless its a real emergency,becasue it has to last you at least 6.5 minutes a lap. Do hol on to one anyway and set it more to duration than power.
I think that's everything i covered.... also, remember to oil change...
Happy Nurbgring-ing..
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