Manufacturers claims for the wheels and rotors. I went from stock 18 " wheels to 17". I don't know what the OEM tires weighed. That was 5 sets of tires ago. I rarely use launch control because I don't want to excessively abuse the car considering how I use my car but the few times I did it launched fine with decent tread on the tires.
My car does bog a little off the line but EQT would need to fix that. I'm not going to do whatever logging would be necessary to address the bog. When the tire tread is under 5/32 " tread I get some tire screeching when it shifts to 2nd gear and the traction light comes on in the upper RPM range of each gear.
What size and model tire are you using now?