Lots of cars lock the rears up as weight shifts to the front and if you do not have stiffer front springs the rear unloads so loss of traction. Why back in the day Guldstrands stiffer springs vs Herb Adams soft springs bigger sway bars always worked better for me. I'd go too hot into a turn then brake
Back in the day GM even had one for Corvettes as a GM part number. Different sized tires fvcvbg from stock, different shock valving and spring rates all undo what the factory engineers designed. And they usually did not design for "hard driving".
My 78 TA when new did that until I changed springs and added an adjustable Vette valve , then when it started leaking used a Mopar Direct Connection valve.
I have always plumbed then in after the combination valve.
Now when my folks had a ' 70 Vega wagon with the hand E brake we would be driving down the road and pull it screeching tires while going straight
We even shoved a 409 short block from a wrecking yard in the back and drove it home for my Impala!