PS3 is medium la, tread wear rating at 320, not that soft actually. 40-50k km is also about normal average. Soft is like tread wear rating below 260 like RE003/RE004 at 220, Advan Sport at 240, AD08R at 200. No point also going for too hard compound coz it will get harden by time hence eventhough tread still thick but rubber already cracking. IMHO tread wear around 280-340 with mileage around 40-50k km is ideal for typical daily driven cars, unless you drive so much like taxi/grab drivers.