Glad the car drives well for you, the R8 LMS is rather a unique case. I bought the car since back in 1.00, and with a stock tune it was bad for me, so I changed the toe to neutral value and reset the camber to all zero ( GT6 camber is broken even to this day - zero = max grip ) and the 1st thing I noticed was how twithcy it was at low speed. Then I tried simple test, drove at 30-60kmh and do a zig zag. The car easily over rotate with the front tire having too much grip compared to the rear tire.
Once I understand the main cause, I tuned the car to make the front and rear closer in grip balance. There are many ways to tackle this, a lot of tuners here uses ballast ( plenty of it ) and placed it at the front to make the front heavier and slower to respond and giving the car more neutral balance with less weight shift. Another way is to use ride height, the current ride height physics is reversed in GT6 compared to real life, with higher front than rear = more rotation, and lower front than rear = less rotation. Quite a lot uses this to help with the oversteer, dumping the nose down and raise the rear.
I always try to avoid to use ballast or ride height bug to tune cars. I prefer realistic weight distribution and not to use easy fix approach as it has side effects.
I concentrated on spring rate, damper, arb, camber, toe, LSD and aero for this car. Choosing spring rate is the 1st step and also the most important, it's the foundation of a suspension, damper, arb, camber and toe are to support the spring.
The R8 rear spring rate is set to give more stability on all speed, with damper and arb to make the car easier to drive. Rear toe helped to stabilize the car under braking, and a bit of camber at the front to reduce the front sensitivity. You can use zero camber front and back for max possible grip in cornering, but you may have a sharper steering, thus requires more accurate input.
The LSD is the most crucial part when it comes to stable braking and overall handling. The initial torque is high to make sure the rear tire do not easily break away traction on lesser load, with high braking to reduce oversteer when braking hard ( turn in ) and coasting / off throttle.
Aero is another important aspect, the front aero has great effect on the car balance in medium to high speed. It's also somewhat has small effect on low speed steering ( just below 100kmh to 160kmh ) I used lower aero to make the front less pointy at high speed with rear to balance it and giving the car more acceleration and top speed
Aero is very dependent too on track. Increase both front and rear by same amount if you want more aero, add 30 on both for a start.
If you want to learn more about the car, try to change LSD values, reduce/increase all 3 value ( initial,accel,brake ), then try the car, make a note of how LSD affects the car. Then you can try to increase or decrease only the rear spring rate, use 0.25kg/mm value increment each time, and observe how it affect the rear tires and balance.
Please understand that all of my tunes/replica are base tune, sometimes small tweaks can do wonders to suit one's driving style
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