Its the sound a 4WD tyre makes when you jam the side wall on a stick… That is what I discovered today.
Fortunately we were only 2 kms down our local track when it happened as I quickly discovered that my rachet socket was not going to budge the wheel nuts and we had to limp back to the main road before we got a wheel brace.
The tyre was already shot to pieces with a 5 cm slice down the wall, but by the time we got out it was barely on the rim.
Glad it happened here and not 50 kms from anywhere!