Chains are not recommended on front of many 4x4s due to steering knuckle and brake configurations; especially disc brakes and IFS axles.

Drum brakes are enclosed with no exterior moving parts. Disc brakes do have exterior parts that can be damaged by standard tire chains.

Hence, manufactures warn against using chains on the front.

There are a number of new styles of chains being produced that are touted as being compatible with disc brake systems.

In the mean time, if you need chains, chain the rear only.

Loose fitting or improperly installed chains can damage brake lines....