Yes, cheap tyres can affect the performance of your car. Low-end tyres are often made with low-grade materials that aren't as durable or responsive as more expensive options. This means you may experience reduced grip in wet conditions or less precise handling on corners, both of which increase the risk of an accident. Therefore, it's important to invest in good quality tyres that have been designed specifically for your car's make and model. This will ensure safer handling and better overall performance, giving you peace of mind on the road.