The E30 platform was BMW's cash cow from 1984-1991, spawning all the popular variations of the 3-series BMW including the racy first-generation M3. While generally bulletproof, one of the weak spots on these cars was their exhaust system, up to and including the BMW E30 muffler. The BMW E30 muffler had a tendency to rust and corrode quickly, which led to exhaust leaks. Even though some owners loved the deep growl emanating from a blown-out BMW E30 muffler, it didn't look so hot and it raised the potential for dangerous carbon monoxide to enter the cockpit. If you're seeking a replacement BMW E30 muffler for your 3-series, you have a number of options to consider. You can replace your worn part with a stock-style BMW E30 muffler, which will give you factory-fresh characteristics-including the potential for rustout. Or, select an aftermarket BMW E30 muffler made from aluminized or stainless steel. Either of these materials give far more corrosion resistance than the mild steel used on factory systems, meaning your replacement BMW E30 muffler should last far longer than your original. Better yet, upgrade to a free-flow BMW E30 muffler. Offering higher performance and a racy exhaust note, a free-flow BMW E30 muffler can boost your engine output and is a great product to install if you're considering hot-rodding your Bimmer. Just remember, all BMW E30 mufflers aren't created equal, and OE isn't always the best choice. Review your priorities and your budget before you go BMW E30 muffler shopping and you'll end up with a new BMW E30 muffler that will keep you happy for years to come.