In most cases of tyre blow outs, you should try to drive straight ahead rather than to slow down quickly and get off the road. With a rear
tyre failure, if you try to turn at high speed, it will likely result in a crash.
Here is what exactly you should do. Put pressure on the accelerator for a few seconds. This will not only put in control of the car, but will also direct the car straight down the road. It will also prevent you from braking and turning. After a couple of seconds, gently release the accelerator pedal.
Then gently allow the car to slow down, and if the situation demands lightly press the brakes to reduce the speed. Engage your turn signal and turn towards the side of the road that is on the same side as blown out car tyre. This reduces your chances of losing control and also makes the tyre change safer.
Most of the highway blow out and tread separation happen while the car is being driven in a straight line on a hot day at high speed, aided by an under inflated tyre. And the repeated flexing of an under inflated tyre cause the failure, so make sure to check your tyre pressure regularly.
A tread separation is a dangerous business to deal with. In case of a tread separation, the tread rubber and underlying steel belt partially or completely come off the tyre. This will create a big Weed Eater with a blade of steel-backed rubber spinning around at about 1,000 rpm. It will cut through the fuel tank, brake lines, inner fender panels, rear seats and side windows.
An upcoming tread separation is often accompanies by a consistent
thumping noise, which later becomes a slapping sound, and then a metal-tearing jackhammer pounding. While sometime this process may take days, at other times it may happen as fast as a few seconds.
In case the tyre begins to fly off, here is what you should do. Squeeze the gas pedal lightly for an instant and release it gently. Drive straight down your lane. Allow the car to coast down as much as possible. Lightly engage your brakes and smoothly turn towards the side of the road same as the damaged tire.