The T3PM pedals are an improvement over the T3PA pedals in several ways. The brake pedal, in particular, is notably better, as it uses magnetic sensors instead of the potentiometer found in the T3PA. In addition, both the gas pedal and the clutch have been upgraded, resulting in an overall smoother and more accurate pedal experience. So, if you're looking for a high-quality set of pedals for your Thrustmaster setup, the T3PM pedals are a solid choice.