Wheel bearings are an important part of the braking mechanism. The wheel bearings are, quite simply, what keep your wheels turning, and with minimal friction. They’re one of those unsung components - they don’t stand out the way something like an engine does, but they still have a role to play in uptime, vehicle performance and even fuel efficiency. Things like bearings, seals, hubs, hubcaps, and adjusting nuts all come together to form a unit that works to keep your trucks rolling. So while they may not seem like the most important component on the truck, they’re a vitally important one, meaning that you should do your best to minimize any maintenance issues.