The 4 State Trucks Blog

Getting the right tire inflation pressure on your semi-truck can prevent underinflation (wearing down the tires and increasing rolling resistance) and overinflation (blowout on the side of the road). Adding the appropriate amount of air pressure to your big rig will keep you and other passerby drivers safe. To find the correct PSI for your tires, check your owner’s manual, or find it on the commercial vehicle’s tire placard. The number is based on various factors, like:  Weight …

Aside from your truck's engine, heavy duty shocks are among the most critical parts that that affect ride quality, suspension performance, and the amount of wear on tires. Here’s a quick rundown of the best aftermarket shock dampeners that we sell at 4 State Trucks, as well as semi truck shock technology, signs of failure, and buying tips.  How Shock Absorbers Work on a Semi Truck  Your leaf springs and air ride parts handle weight support and vertical movement. But your shocks m …

Looking to add some power to your truck’s voice and match your exterior chrome-polished aesthetic? Find the best air horn for your semi truck. In this guide, we’ll cover the top brands, materials/finishes, mounting options, decibals, sound profiles, and more. Why Add an Air Horn to Your Big Rig?  The biggest reason? It adds to your truck's character. Just like high-pitch whistles or bells, they're a fun accessory to have on your truck. Air horns and train horns operate by pneum …

Wondering about the best aftermarket fuel tank accessories and parts to get? Here's a quick guide on the various types of semi truck fuel tank accessories and replacement fuel tank parts that you can buy to start customizing your commercial truck. We’ll cover the top fuel tank accessories, how a fuel tank works, maintenance and upkeep, parts of a fuel tank, fitment specs, and a buyer’s checklist. Best Fuel Tank Accessories to Add to Your Semi Truck Fuel Tank Fairings & Highlight …

Looking to cover your truck’s frame and get a little more protection, easy access to components, and better style?  In this post, we'll cover how to get the perfect semi truck deck plate for your big rig.  Buying the right one for your heavy duty truck will come down to personal style preference (polished smooth or treaded finish), the price point, size, and brand. 4 Reasons Why You Need a Deck Plate on Your Rig Safety: Prevent slips and falls when stepping behind the cab Prote …