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How to install snow chains 
Identify the drive wheels of the vehicle. 
Snow chains are intended to help you gain traction in the wheels that push the vehicle. Depending on the application, that may be the front wheels, the rear wheels, or all four.
Pick from:
 1). Don't forget to consider your driving situation as well. If the trucks are small, there may be a back wheel and a front wheel with four..
 2). When you've found the exact direction you'd like your snow chains to move, measure the vehicle's tire depth (km) and the truck's bore depth (km) through the road. Measure the surrounding area with a measuring tape and have the vehicle visual visually (through keyhole)..
 3). Refer to your vehicle's owner's manual if you are unsure which wheels are the drive wheels. Front wheel drive cars (fwd) will use snow chains on the front wheels..
 4). Drive wheels can be incredibly difficult to attach to the vehicle from the ground. If either way you can safely attach snow chains to the tires inside your car is to be selected..
3).