I almost went for dunlop sportmaxx but the falken were good value and well rated
But the cars backend feels loose now and sliding out around corners at 40 or 50mph, iv had to catch it twice so far
The cars on coilovers and pressures are 33 fr and 30 rr as thats what was recommended to me
Are they well scrubbed in? Not brand new and still have that slight sheen on them?
Some could argue that having a lively back end makes driving more fun, but if it's doing when you aren't planning for it, that could be an issue lol
What are your coilovers set at? If you set the rears softer, it should make it less likely to snap out.
You should consider if your driving technique needs tweaking if you're looking at all options as well - if you're backing off the throttle mid-bend, that will take the weight off the back end and increase the risk of it coming round, so try to brake before the bend, choose the speed you want/need, then balance the throttle/accelerate through the corner
You could also look at single-input steering, where you turn the wheel to an angle and then hold it throughout the bend, to keep the car more balanced. It doesn't always work, such as on twisty country roads, but clear sighted corners and large roundabouts are good practice!