The E46 M3 is one of BMW’s most celebrated performance cars! 🥳 But if you own one (or are shopping), there are three major weak points you must address: 🔧 1. Rear Subframe Mounting Points: The rear floor of the E46 was under-engineered. The thin sheet metal where the subframe mounts can crack over time from torque and suspension stress. Left unchecked, repairs get very expensive. The solution is reinforcement: welding in steel plates and upgraded bushings. Turner Motorsport and ECS Tuning both offer reinforcement kits that permanently solve the problem. If you’re buying an E46 M3, checking for cracks should be step one. 🔧 2. Rod Bearings: Rod bearings are thin metal sleeves that let the crankshaft and connecting rods spin smoothly. On the S54, clearances were too tight, leading to premature wear and sudden failure. Early cars (2001–2003) were recalled, but all years are at risk. The preventative fix is updated bearings with ARP bolts. We offer complete service kits that avoid...