I had budget tyres for a year on my car, thought they were fine until I hit a massive patch of standing water and the front end of the car went light, it was terrifying and unexpected seeing as I had about 5mm of tread. Changed them for Continentals shortly after and they kept contact even with deep standing water, and they still do after 8k. Crap tyres are okay most of the time, that's why people write 'rave' reviews when they go out and replace utterly worn out top brands with new budgets, but when it actually counts you need something decent and you usually won't find out until it's too late.