15If a tire has a bald spot, bulge, cut, cracks, or isshowing any cords, replace the tire before towing. If atire has uneven tread wear, take the trailer to a dealerservice center for diagnosis. Uneven tread wear canbe caused by tire imbalance, axle misalignment orincorrect inflation.Tires with too little tread will not provide adequatefrictional forces on wet roadways and can result inloss of control, leading to death or serious injury.Improper tire pressure causes increased tire wearand may reduce trailer stability, which can result ina tire blowout or possible loss of control. Therefore,before each tow you must also check the tire pres-sure. Remember, the proper tire pressure is listed onthe Certification (VIN) label, and should be checkedwhen tires are cold. Allow 3 hours cool-down afterdriving as much as 1 mile at 40 mph before checkingtire pressure.WARNINGImproper tire pressure may cause an un-stable trailer. Blowout and loss of controlmay occur. Death or serious injury can result.Make sure of proper tire pressure beforetowing trailer. Inflate tires to pressure indi-cated on the Federal Certification/VIN label.The tightness of the lug nuts is very important inkeeping the wheels properly seated to the hub.Before each tow, check to make sure they are tight-ened to the proper torque.WARNINGMetal creep between the wheel rim and lugnuts (bolts) will cause rim to loosen.Death or injury can occur if wheel comes off.Tighten lug nuts (bolts) before each tow.The proper tightening sequence and tightness(torque) for lug nuts is listed in the “Lug NutSequence” section of this manual. Use a calibratedtorque wrench to tighten the lug nuts.Lug nuts are also prone to loosen after first beingassembled. When driving a new trailer (or afterwheels have been remounted), check to make surethey are tightened to the proper torque after the first10, 25 and 50 miles of driving and before each towthereafter. Failure to perform this check can result in awheel parting from the trailer and a crash, leading todeath or serious injury.WARNINGLug nuts are prone to loosen after beingfirst assembled. Death or serious injury canresult.Check lug nuts for tightness on a new trailer,and after re-mounting a wheel at 10, 25 and50 miles.WARNINGInadequate lug nut torque can cause a wheelto part while towing. Death or serious injurycan result.Make sure lug nuts are tight before towingtrailer.Improper LoadingThe total weight of the load you put in or on thetrailer, plus the empty weight of the trailer itself, mustnot exceed the trailer’s Gross Vehicle Weight Rating(GVWR). If you do not know the empty weight of thetrailer, you must measure it at a commercial scale.In addition, you must distribute the load in the trailersuch that the load on any axle does not exceed theGross Axle Weight Rating (GAWR). The GVWR andGAWR’s are listed on the Federal Certification/VINlabel mounted on the front left side of the trailer.WARNINGAn overloaded trailer can result in failureor in loss of control of the trailer, leading todeath or serious injury.Never load a trailer so that the weight on anytire exceeds its rating.Never exceed the trailer Gross VehicleWeight Rating (GVWR).Never exceed an axle Gross Axle WeightRating (GAWR).