The most common BMW spacers sizes are 5×112 and 5×120. In general, older models (like E-chassis and F-chassis) use the 5×120 bolt pattern and the newer models (G-chassis) would use the 5×112 lug pattern. It is worth noting that the 5×120 to 5×112 conversion BMW spacers can make 5×112 wheels fit the 5×120 BMW vehicle hubs. All in all, knowing the correct sizes of your BMW spacers is important to avoid any damage to the wheels.
Only if the bolt pattern match can you install BMW spacers safely. Mostly, the same production cars share the same bolt pattern. So, you can easily check the vehicle bolt pattern in your owner’s manual or search by model and year on Google. When adding slip-on BMW spacers, you need special care of the bolt thread engagement. Giving an example, the length of an M12 BMW wheel bolt is 25mm while the M14 BMW bolt is 27mm in length. Below is a brief guide on BMW spacers fitment.
How Thick BMW Spacers Do I Need?
In the market, the thickness of BMW spacers is various: 3mm, 5mm, 8mm, 10mm, 12mm, 12.5mm, 15mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, and above. The recommended BMW spacers size depends on your wheel gap. For most BMW cars, it is recommended to stick to the rule of thumb of running wheel spacers not passing through the fender flares. Place a straight edge flush with the outermost wheel edge. Then measure from the wheel edge to the inner fender lip. If the result is 15mm, then 15mm BMW spacers are fine.
If would like to go below 20mm BMW spacers, then we recommend BONOSS forged lightweight plus wheel spacers. These spacers are slip-on types. While ensuring safety and performance, BONOSS lightweight plus BMW spacers are cut with many hollow holes. Due to these hollow holes, the average weight of each spacer is more than 30% lighter than the previous-gen product. Adding such a small lightweight component wouldn’t noticeably slow a car down. In other words, these BONOSS forged lightweight plus BMW spacers will not affect the acceleration or mpg significantly.
What Are BONOSS Active Cooling BMW Spacers?
Advanced technology and top quality make BONOSS BMW spacers your best option. With the same price as most rim spacers, BONOSS BMW spacers provide more additional advantages, for example, BONOSS active cooling BMW spacers are designed with heat dissipation grooves to make brake cooling better. The heat dissipation grooves behind the spacers are boosting the cooling efficiency, reducing brake thermal decay, and improving road safety.
Additionally, BONOSS forged active cooling BMW spacers are finished with a textured surface on the sides. The knurling surfaces can enhance the aesthetics by introducing an attractive pattern to their surface. Aside from aesthetics, the knurling surfaces improve grip and usability. Knurling BMW spacers protect against hand slippage by creating a textured pattern that’s easier to grip. This is more convenient especially when installing or removing.