Ensuring the Safe and Proper Use of Aluminum Wheels (Read Carefully)

The aluminum wheels listed in the catalog are in compliance with the Japan Light Alloy Wheel (JWL) or Japan Light Alloy Wheel Truck & Bus (JWL-T) standard, and have passed the tests conducted by the Vehicle Inspection Association (VIA). To ensure the proper safety and performance of the wheels, follow the instructions indicated below. Also, before using the wheels, be sure to read Ensuring the Safe and Proper Use of Aluminum Wheels, which is included with the aluminum wheels. For any additional information that you may require, contact the dealer where you purchased the products.

Selecting the Wheels

Make sure the size, number of holes, PCD (pitch circle diameter), offset, and mounting surface shape of the wheels are compatible with the vehicle on which the wheels are to be mounted. The wheels cannot be mounted if any of the foregoing attributes are not compatible.

Mounting the Wheels

A wheel comes with a 60-degree taper, spherical, or flat lug nut seats. Therefore, verify the thread diameter and pitch of the hub on the vehicle, and use nuts or bolts that match the shape of the seats (or use dedicated nuts or bolts as instructed). If the shapes do not match, it will not be possible to properly tighten the nuts or bolts, which could cause them to become loose and detached while driving.
Use only the supplied valves. Using other valves with unmatched sizes or shapes could cause air to leak through the valve hole.
When the valve core must be replaced, be sure to use a new one because an old valve core with a deteriorated seal could cause air leakage.
Use the short type valve core (model number JIS B type 9000). The long type, which does not match in size and shape, will cause air leakage.
Do not tighten the nuts or bolts with an impact wrench. Over-tightening in this manner could damage the nuts and bolts, or could cause the wheel to be mounted unevenly, which results in vibrations. If an impact wrench must be used due to unavoidable circumstances, first tighten the nuts or bolts to a low torque; then, tighten them to the specified torque.

After Mounting the Wheels


◊Never mount a wheel in a way that causes the tire or wheel to protrude from the fender, which is prohibited by law.

◊After mounting the wheels, fully turn the steering wheel to the right and left to make sure the wheels do not come in contact with the vehicle body.


◊After mounting the tire to the wheel, immerse it in a water tank to make sure there is no air leakage in the area where the tire mates with the rim, or in the area around the valve. If there is any air leakage, dismount the tire and remount it properly.

◊The lug nuts are susceptible to loosening following the installation or relocation of the wheels. Therefore, retighten them to the recommended torque after driving approximately 100 kilometers.


If an abnormal vibration or sound is sensed during driving, immediately stop the vehicle in a safe location and check the lug nuts for looseness, the wheels for deformation, and the conditions of the tires.
Do not drive over curbs or dips in the road, as it could damage the rim flanges.

Daily Care

◊Aluminum alloy wheels are susceptible to corrosion when they are exposed to salt or mud. Therefore, wash them with water after driving the vehicle on the beach or on a snowy or unimproved road. Before using a commercial wheel cleaner to wash the wheels, be sure to read its operation manual.
Using car wash equipment could scratch the wheels. Therefore, it is best to wash them by hand. When doing so, be careful with sharp edges, which could be hazardous to your hands.
For storing the wheels, wash them thoroughly and store them in an area that is not exposed to direct sunlight or moisture.

Danger! Do not perform the following:


◊Never disassemble the rim and the disc of a two- or three-piece wheel, which is dangerous. Disassembling such a wheel will create an imbalance in the tightening force of the bolts, which reduces the strength of the wheel and causes air leakage and vibration. In the event a wheel becomes loose, make sure to contact your dealer.

◊Never attempt to repair or rework a wheel that is deformed or cracked. This is dangerous because the strength of the wheel could decrease due to invisible deformations or the thermal effects of welding.

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