Pay a visit at my replica garage, I have some wild beast tamed
, I recently updated my R8 LMS Ultra Phoenix ( only tweaked LSD + suspension ), my approach is different than most tuners here both in suspension and LSD ( I also never use any aids ), if you try my tune you will know
As for ballast, it's always last resort for me, unless I wanted to fix the weight distribution because PD made a mistake ( Supra RZ for example ). If you need any help with specific cars you can leave a request at my garage and we can discuss further there.
For oversteering car, LSD can definitely help. I adapted real life LSD into GT6, and so far it works great on my replicas and tunes. For MR cars with instability ( oversteer ), I would recommend increase LSD initial torque ( preload ) - I calculated based on engine torque, tire grip level and track characteristics.
Here is a simple trick - for easy to manage LSD, increase initial to half ( 30 ) or more ( I often use max value first or my own calculation ), increase accel and brake to 36 or more. Drive the car at tracks like Apricot Hill, Bathurst and Brands Hatch GP, use lower grip tire like comfort soft ( street car ) or sports tire ( race car ), notice how understeer usually creeps up earlier when coasting, braking or accelerating out of corner. Higher initial gives less difference in car behavior when near the limit as LSD locking occurs at later stage, but it may give sudden drastic changes when activated, especially with high accel and brake. When you can drive and establish how the car behave in general with the high initial LSD, keep reducing initial by 1 or 2 value, and drive it again. You will notice changes in handling, car becomes looser instead of tight, LSD locking kicks in earlier than before, find the sweet spot that you really like - gives stability but not too tight.
Once that done, now aim to stabilize locking rate under throttle ( accel ), reduce/increase the value until the outside tire spins almost at the same time as the inside tire, use the Willow Springs Big, the second corner ( right curve ) is a great spot to test this. Once that done, reduce/increase braking to stabilize the car under braking or coasting. The R8 Ultra Phoenix for example, needs high braking to make it stable and reduce lift off oversteer and sweet spot for initial torque using racing hard tire is also pretty high ( more than 20 ) - not understeery but still tight/stable. The R8 also runs well with high accel value, I found a good value that allows controllable oversteer, and as the car has high initial torque, such oversteer due to LSD lock rarely happen. With suspension and LSD, a 528HP, 599PP, stock gearing + aero, R8 LMS Ultra Phoenix can lap Bathurst in 2:05s, Brands Hatch GP in 1:22s - comparable to other GT3 cars with oil change 600+PP.
Check out my Knight Sports RX7 Special Edition, it has 402PS on comfort soft, able to easily post 1:03 flat at Tsukuba - replicating the real car performance. It has adapted real life LSD that help gives the car unique handling. One tuner has given good review on the car ( Blueshift )
