Need help eliminating oversteer

AlWakRa

I am not that expert as most people here, but I will give my 0.02$

A lot of informative replies, I didn't read all of it, but I have nearly the same issue right now, and it appeared when my friend drove it, he couldn't complete an AutoX run in it as he spinned all the time mainly due to his early throttle input. I didn't have this problem before, what have changed from my last setup which was very balanced with slight oversteer.

Tires: from RE71R 275/35-285/35 combo to R888R 265/30-295/30
LSD: Installed OS LSD
ALIGNMENT: it was around Front camber -2.4 caster 6.0 toe 0 Rear camber -1.8 toe 0.12 (total 0.24) to front camber -2.8 caster 6.5 toe 0 rear camber -2.7 toe 0.32 (total 0.64 !!!! - couldn't dial it as I skipped ML as I was planning to change suspension and Truetype could be on the card) my front grip was very good, but rear isn't, even with an added downforce, it didn't improve. I don't know about hoosier recommended alignment, but I can say the first culprit could be excessive camber-toe.
Then, it may be the hard springs at rear, as it is true-type, I saw most TT setups are a lot softer than oem style at rear, I reached out to MCA for new coilovers, they suggested 22kg front and 8kg rear.

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