BMW 335i Speaker Size

Rear Side Panel Speaker

Center Dash Speaker

Front Door Panel Speaker

Rear Door Panel Speaker

Rear Deck Lid Speaker

Below Seats Speaker

BMW 335i Speaker FAQ

Which speakers should I replace first in my BMW 335i for the biggest sound improvement?

Start with the front door panel 4 inch component speakers. These handle most of your midrange frequencies and vocals - replacing them typically gives you the most noticeable upgrade. The BMW 335i front doors use component systems, so you'll get separate woofers and tweeters which usually means better sound staging. After that, consider the 8 inch subwoofer below the seats if you want more bass impact. The rear speakers can wait since they mostly fill in ambient sound.

What's the difference between the coaxial and component speakers in my BMW 335i?

Component speakers separate the tweeter and woofer into different units - your BMW 335i front doors use this setup. The 4 inch component woofer handles midrange while the 1 inch tweeter takes care of highs. Coaxial speakers combine both into one unit, like what you'll find in the rear doors and center dash. Components generally sound better because each driver can be optimized for its frequency range. Though coaxials are easier to install since everything's in one piece.

Can I upgrade the BMW 335i tweeters separately from the main speakers?

Yes, you can replace just the 1 inch tweeters in your BMW 335i. They're located in the front door panels, center dash, and rear locations depending on your specific setup. Most aftermarket tweeters will fit the 1 inch mounting points. However, mixing brands between tweeters and woofers might create frequency response mismatches. The impedance should stay around 4 ohms to match your factory system. Consider upgrading tweeters when the originals sound harsh or lack detail in cymbals and vocals.

What power handling should I look for when replacing BMW 335i speakers?

The factory BMW 335i speakers typically handle around 20-30 watts RMS. Most aftermarket 4 inch speakers can handle 40-60 watts RMS, which gives you headroom for a future amplifier upgrade. The 8 inch subwoofer location might handle 80-120 watts RMS depending on the replacement. Don't get caught up in peak power ratings - they're mostly marketing. RMS power tells you what the speaker can actually handle continuously. Your factory head unit probably puts out 15-20 watts per channel anyway.

Why does my BMW 335i have so many different speaker locations?

BMW designed the 335i audio system for surround sound staging. The front door components create your main soundstage. Center dash speakers help with vocal clarity and imaging. Rear speakers provide ambient fill and passenger entertainment. Multiple tweeter locations - front doors, center dash, sometimes rear panels - extend the frequency response across the cabin. The 8 inch subwoofer below seats adds low-end foundation. It's actually a pretty sophisticated setup when working properly, though individual speakers might fail over time.