Lexus 2016 GS350 Owner's Manual page 319

Tire chain installation
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Observe the following precautions when installing and removing chains:
Install and remove tire chains in a safe location.
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Install tire chains on the rear tires. Do not install tire chains on the front tires.
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Install tire chains on rear tires as tightly as possible. Retighten chains after driving 1/4
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 1/2 mile (0.5  1.0 km).
Install tire chains following the instructions provided with the tire chains.
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GS350_200t_GS F_OM_OM30E86U_(U)
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4-6. Driving tips
4