Pewag is an Australian company that specializes in making incredibly huge chains for massive tyres. If you've got an enormous Caterpillar loader to keep up and functioning, you're going to reach out to this company to make sure your tyres are well protected from particular dangers, such as fire and extreme temperatures in this case. You do this because these tyres are a whopping $60,000 each and why risk any damage befalling any of them?
Check out the entire process in this video. The work that goes into this process is daunting. It takes a while to chain up these tires but once they're secure, you know they're very, very secure.