Subaru Forester Manuals 2023 Forester Owner's Manual | Page 522

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Tire information
& Tire care – maintenance and safety practices
S13AB04
. Check on a daily basis that the tires are free from serious damage , nails , and stones . At the same time , check the tires for abnormal wear .
. Inspect the tire tread regularly and replace the tires before their tread wear indicators become visible . When a tire ’ s tread wear indicator becomes visible , the tire is worn beyond the acceptable limit and must be replaced immediately . With a tire in this condition , driving at even low speeds in wet weather can cause the vehicle to hydroplane . Possible resulting loss of vehicle control can lead to an accident .
. To maximize the life of each tire and ensure that the tires wear uniformly , it is best to rotate the tires every 6,000 miles ( 10,000 km ). For information about the tire rotation order , refer to “ Tire rotation ” FP471 . Replace any damaged or unevenly worn tires at the time of rotation . After tire rotation , adjust the tire pressures and make sure the wheel nuts are correctly tightened . For information about the tightening torque and tightening sequence for the wheel nuts , refer to “ Flat tires ” FP420 .
& Determining compatibility of tire and vehicle load capacities
S13AB06
The sum of four tires ’ maximum load ratings must exceed the maximum loaded vehicle weight (“ GVWR ”). In addition , sum of the maximum load ratings of two front tires and of two rear tires must exceed each axle ’ s maximum loaded capacity (“ GAWR ”). Original equipment tires are designed to fulfill those conditions .
The maximum loaded vehicle weight is referred to Gross Vehicle Weight Rating ( GVWR ). And each axle ’ s maximum loaded capacity is referred to Gross Axle Weight Rating ( GAWR ). The GVWR and each axle ’ s GAWR are shown on the vehicle certification label located at the bottom of driver ’ s side door pillar .
The GVWR and front and rear GAWRs are determined by not only the maximum load rating of tires but also loaded capacities of the vehicle ’ s suspension , axles and other parts of the body .
Therefore , this means that the vehicle cannot necessarily be loaded up to the tire ’ s maximum load rating on the tire sidewall .
& Adverse safety consequences of overloading on handling and stopping and on tires
S13AB07
Overloading could affect vehicle handling , stopping distance , and vehicle and tire performance in the following ways . This could lead to an accident and possibly result in severe personal injury .