Frequently Asked Questions About Kenworth T700 Mud Flaps

What size mud flaps fit my Kenworth T700, and are they compatible with all model years?

Standard Kenworth T700 mud flaps typically measure 24" x 30" for the rear and 24" x 24" for the front, though some drivers prefer 24" x 36" for extra coverage. These dimensions fit T700 models from 2010 through 2019. However, trucks with aftermarket fender modifications or lift kits may require custom measurements. We recommend measuring from the bottom of your fender to determine the ideal length, ensuring at least 6-8 inches of ground clearance when loaded.

What's the difference between rubber and stainless steel backed mud flaps for my T700?

Rubber mud flaps are the most economical choice, offering good flexibility and typically lasting 2-3 years under normal conditions. They work well for regional hauling but may tear in extreme cold or with heavy debris impact. Stainless steel backed mud flaps feature a metal plate sandwiched between rubber layers, providing superior durability and maintaining their shape better in high winds. While they cost roughly 40-60% more upfront, they often last 5-7 years and reduce replacement frequency, making them ideal for long-haul applications.

How difficult is the installation, and what tools do I need?

Installing T700 mud flaps typically takes 30-45 minutes per set with basic tools. You'll need a drill with metal bits (usually 3/8"), a socket wrench set, and anti-seize compound for the bolts. Most mud flaps use the existing mounting holes in your truck's brackets, but some aftermarket options may require drilling 2-4 new holes. The biggest challenge drivers report is accessing the upper mounting bolts on lifted trucks or those with custom exhaust configurations. Having a second person helps with alignment during installation.

Will aftermarket mud flaps affect my truck's fuel economy or create wind resistance?

Properly sized mud flaps have minimal impact on fuel economy - typically less than 1% difference. However, oversized or improperly mounted flaps that extend too far below the vehicle can create noticeable drag, especially at highway speeds. Anti-sail brackets or weights help reduce flapping and improve aerodynamics. Many drivers report that weighted mud flaps or those with aerodynamic tapering actually improve stability in crosswinds compared to standard flat designs.

Which mud flap brands hold up best for heavy-duty use and winter conditions?

Based on driver feedback, heavy-duty rubber compounds from manufacturers like Minimizer and WingLine perform well in extreme conditions, maintaining flexibility down to -40?F. For winter driving, look for mud flaps with UV inhibitors and anti-cracking compounds. Avoid cheap imported flaps that become brittle in cold weather. Many T700 owners in northern states prefer flaps with reflective strips or LED light compatibility for added visibility during snow and salt spray conditions.