Race drivers always seek for the duality of physics: He/she wants traction. And Rotation. A good front end and a good rear. The truth is: It's all always there, but what the driver is unhappy with is laptime and corner speed. Always. The Lexus then doesn't have the best of front ends, but it has good electronics that allow you do work the rear on throttle and work around the limitations of the front. At the same time its not a snappy or slidey rear, it just about bites into the tarmac, takes some excess load from the front and suddenly the car rotates nicely around the slower bends at least - while blasting that beautiful piece of a soon-to-be-history V8 that sounds even better off throttle than on it. 

The car generally feels better with fuel in the back and the quali delta isnt that large. The front bottoms less with fuel in the back. Passing should be possible with the top speed, but beware of your longer braking distances. The Q setup uses much less wing to run lower rake which gives traction when the tank is empty.

Electronics:
TC on 1 or 2 for Q and potentially 3 for the Race feels best for me as the car allows you to actually work with the rear on throttle
ABS on 5 or 6 seems predictable. TC off can work in the fast turns if you are comfortable.

Adjustments (you dont actually need any imo)

• The spring steps are rather large, dial in the ARBs first.
• stiffen front spring if braking into the corners is an issue, maybe start with stiffening front roll bar instead
• move BB forward if too loose into the corners. The weight transition is very tricky here and the rears easily lock up.
• adjust rear ride height for over/understeer by 1mm steps
• Car might be faster with lower front ride height, but it will bottom out occasionally
• Generally the car is set up rather loose because the front has so little grip. Feel free to add more rear camber if it rotates too much for you.

Driving

• entry into the corners is crucial, try to live with minimal brake inputs to load the front up carefully. Give the front end time, don't throw it arround, it will easily exceed the grip limit and never come back. overall be careful and the car will turn.
• rotate car on throttle past the apex to pin it to the inside. Yet, don't overdo it as the TC will silently engage and stop all acceleration - not as good as the aston but still good in this car! 
• Onto the throttle don't just floor it in the slower corners, give the car some time (say, half a second) and it will thank you
• aim for late apex in hairpins, try to trail deep, immediate but progressive throttle, little to no coasting in tight corners, aggressive throttle in longer corners. early power is very crucial to work the diff and unload the front.

LFM:
R setup is already prepared for LFM, the laptime is done with 50L