Dry powder

Water no good due to possible live electrics

Co2 no good because it will disperse probably before the fire is out if the tyres are burning

Water foam, same as water

Originally Posted by: Ian Bell2

Water no good due to possible live electrics

Co2 no good because it will disperse probably before the fire is out if the tyres are burning

Water foam, same as water

1 of my clients is into tyre shredding. If tyre rubber catches fire it is very hard to extinguish.

Here are some examples of extreme fires and how long it takes to extinguish

1983 – Seven million tires burned for nine months in Winchester, Virginia, polluting nearby areas with lead and arsenic. The location was cleaned up as a Superfund project from 1983 to 2002.[2]

1999 – Lightning struck a tire dump in Westley, California, which burned for 30 days. Pyrolitic oil flowed into a nearby stream and also ignited.

2008 – a malfunction in the chopper/shredder line of the Golden by-products tire recycling plant in Ballico, California ignited rubber debris around the conveyor system which then ignited two multi-ton piles of shredded/chopped rubber. It only burned for about 12 hours but took over 1 million gallons of water extinguish. The piles were allowed to form a crust which in turn smothered the fires in them. The plant was later cited for exceeding permitted capacity.[15] [16]

The last fire quoted only burned for 12 hours but the volume of water to extinguish it is asrtanomical

All quotes taken from here

https://en.wikipedia.org/wiki/Tire_fire