NISMO Alloy Road Wheels conform to technical standards for light alloy composite wheels (JWL for passenger cars, JWL-T for trucks and buses), have passed the tough quality and strength testing of the Japan Light Alloy Wheel Association and have been awarded the Associationfs gVIAh mark. To guaranty safety, please follow the instructions below:
- Because of the differences in each modelfs fender clearance, tire brands and tire sizes, there will be some variance of total tire width and height: always match carefully using this reference material. Because of the difference after changing from a standard car height and wheel size, tire chains will most likely not be able to be used without hitting the car body.
- There are many combinations of wheel size, number of holes, PCD offset and attachment area; using the wrong wheel and tire can be very dangerous, so be sure to consult with your dealer and use only wheels and tries that are compatible with the vehicle.
- Always used the special valve included (or a designated valve). If the valve does not match the wheelfs valve hole, loss of air pressure may occur. When replacing a valve, always use a new unit. Never reuse a valve after it has been removed, because of the danger of air loss due to deterioration of packing. After assembly, always ensure that there is no air leak. Ensure that the tire is fully engaged on the rim, and check carefully around the valve. A loss of pressure makes straight-line running impossible, and has the potential for causing accidents and injury. Always balance all wheels after mounting tires. Improper balance can cause unusual vibration and excessive tire wear.
- There are several classifications of nut seats, including tapered, spherical and flat lug nut seats. After confirming the screw diameter and pitch on the car, always use the special lug nut and bolt. Because the incorrect lug nut or bolt cannot be sufficiently tight, there is the danger of them loosening or coming off while driving. Please make sure to use the correct nut. Always tighten lug nut to the recommended torque (9 to 12 kgf·m for M12, 5 to 7kgf·m for M10). Over-tightening of the lug nut can cause deformation of the nut or bolt hole or damage the bolt. Use an impact wrench only for temporary tightening at a low torque setting, then use a torque wrench to tighten to the recommended torque.
- Depending on the vehicle, the screw for temporarily stopping the brake drum or positioning pin may protrude; if this strikes the installation side of the wheel, please consult with your dealer.
- Please confirm that the wheels do not contact the carfs suspension (for the front wheels, be sure to turn the wheels fully to both left and right). Avoid having the wheel or tire protruding significantly from the car body; this is illegal in many locations. before driving, check tire air pressure and make sure that it is at the designated pressure. With insufficient air pressure, even a small blow can damage both tire and wheel. Because the lug nuts can become loose in the early stages after installation and during rotation, after about 100km retighten the lug nuts to the recommended torque. Afterwards, check for loose lug nuts on a regular basis. Extremely rapid acceleration, movements and turning can damage tires and wheels, and can cause serious accidents. If you hear an unusual sound or feel any abnormal vibrations while driving, immediately stop the vehicle in a safe location and check the systems. Running into sidewalks, curbs and irregularities in the road can deform the wheel or cause cracking. Do not use the wheel when it has been damaged. For assembled wheels (two- and three-piece), the assembly bolts were tightened to the correct torque at the time of manufacture; accidents can result from loosening or tightening these bolts.
- Wheels should never by repaired or machined by either repair staff or the customer. Because of their importance to the car, the performance of wheels is covered by technical standards set by Japanfs Ministry of Land, Infrastructure and Transport, standards on which NISMO bases its own fatigue examinations; the company only manufactures and sells products which have passed these shock examinations. Any repairs to the wheel, such as welding or bending, made after the wheel has been sold will result in a loss of wheel strength. Using a wheel with reduced strength is extremely dangerous, and can easily result in accidents, injury or death.
- Although aluminum alloy has excellent anti-corrosion properties, leaving mud or other materials on the wheels for extended periods of time can cause unevenness in the luster of the coating. A quick wash will ensure that the wheels remain in beautiful condition.
- Anti-icing materials used on snowy roads, and sea water and salt breezes near the ocean are very harmful to aluminum alloy; immediately wash the wheels with water after driving in such areas.
- Do not use direct high-pressure steam or other cleaning methods, which can remove the stickers from the wheels. Replacement sticker sets are available, should the stickers come off.
- Before using one of the many wheel or body cleaners available on the market, be sure to read the manual thoroughly.
