Lexus GS 350 Owner's Manual page 360

Selecting tire chains (GS350/GS300)
Vehicles with front and rear tires of the same size except for the vehicles with

LDH and 19 inch tires
Use the correct tire chain size when mounting the tire chains.
Chain size is regulated for each tire size.
Side chain
1
(3 mm [0.12 in.] in diameter)
Cross chain
2
(4 mm [0.16 in.] in diameter)
Vehicles with front and rear tires of differing sizes and vehicles with LDH and

19 inch tires
Tire chains cannot be mounted.
Snow tires should be used instead.
Selecting tire chains (GS F)
Tire chains cannot be mounted.
Snow tires should be used instead.
Regulations on the use of tire chains
Regulations regarding the use of tire chains vary depending on location and type
of road. Always check local regulations before installing chains.
GS350_300_GS F_OM_OM30J17E_(GE)
359
4-6. Driving tips
4