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Episode 144 - Tires and Extreme Heat

Executive Protection and Secure Transportation Podcast

Release Date: 08/18/2020

Episode 169 - The 2020 ISDA Training Survey Results show art Episode 169 - The 2020 ISDA Training Survey Results

Executive Protection and Secure Transportation Podcast

Last year ISDA conducted an Executive Protection Security Driver Training Survey. The 2020 ISDA Training Survey Results Our goals were to determine the dollar value of the Executive Protection and Security Driving training market. To acquire metrics concerning what motivates potential students to attend one program over another- such as - How did they fund their training? - How many training programs have they attended during their career? - What was their motivation to participate in the training programs? We also wanted to determine what training subjects were covered and the average length...

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Episode 168 - The Science of Backing Up show art Episode 168 - The Science of Backing Up

Executive Protection and Secure Transportation Podcast

Driving in reverse is a valuable driving skill to have.   Backing up slowly can be a problem but backing up fast is hard and dangerous if not done correctly. With that said, it is by far one of the most valuable driving skills to have, and a Security Driver can acquire. Along with being hard to do, it is hard to teach and, if not taught correctly – dangerous. What makes it hard and hazardous is the definition of fast. How fast you can drive in reverse is limited to the vehicle's gearing; in most vehicles, you can drive as fast in reverse, or a little quicker, as you can in 1st gear....

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Episode 167 - The Security Drivers Triangle show art Episode 167 - The Security Drivers Triangle

Executive Protection and Secure Transportation Podcast

The Essence of Security Driving is Found in the Security Drivers Triangle. The driver's ability to avoid vehicle violence does not depend solely on their ability to control the vehicle. A driver is at the mercy of the environment and of the vehicle, they are driving. Driving, any form of driving, is a balance, and that balance is called the "driving system." The driving system is made up of three components: THE DRIVER, THE MACHINE, and THE ENVIRONMENT. In our world, it is called the Security Drivers Triangle. If a triangle's failure causes an accident or a successful ambush, the driver, the...

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Episode 166 - The Difference Between Handling and Cornering show art Episode 166 - The Difference Between Handling and Cornering

Executive Protection and Secure Transportation Podcast

There are two words that are often used in the automotive industry and protective driver training vernacular the words are handling and cornering. To get a better understanding of how the driver interacts with the vehicle requires understanding the difference between Handling and Cornering. While conducting a driver training program understanding this interaction is a must – when running a secure transportation operation, knowledge of this interaction adds to the principal’s safety and security.

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Episode 165 - Safety, Security, and the Science of G's show art Episode 165 - Safety, Security, and the Science of G's

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Ensuring the passengers’ safety and security requires the driver to have the knowledge, skill, and experience to control the vehicle when confronted with an emergency. The emergency does not necessarily need to be a security scenario; it can often be an accident-producing situation.  As we have mentioned many times in the past, research and science define driving skill as the driver’s “ability” to use the vehicle’s “capability.” Former  or Scotti School students know that we were and are anal about training our students to maximize the vehicle’s capability. The...

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Episode 164 - Vehicle Dynamics and Passing show art Episode 164 - Vehicle Dynamics and Passing

Executive Protection and Secure Transportation Podcast

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Episode 163 - A Dramatic Increase in Carjackings show art Episode 163 - A Dramatic Increase in Carjackings

Executive Protection and Secure Transportation Podcast

Hello, and welcome to episode 163 of the EPST podcast. I'm your host, Larry Snow. The topic for this week’s episode is the huge increase in carjackings. Statistically, driving the principal from point A to point B has been the highest risk the principal faces during their daily routine. A not so new risk needs to be added to that trip, and that is the dramatic increase, in fact, a staggering increase in carjackings in parts of the United States during the pandemic. If you are not familiar with the term, a carjacking is a violent, potentially fatal version of auto theft. Do a Google search...

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Episode 162 - Reflecting on the Effects of COVID-19 on the Profession show art Episode 162 - Reflecting on the Effects of COVID-19 on the Profession

Executive Protection and Secure Transportation Podcast

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Episode 161 - Assassination of Mohsen Fakhrizadeh show art Episode 161 - Assassination of Mohsen Fakhrizadeh

Executive Protection and Secure Transportation Podcast

The topic for this week’s episode is an outline of the assassination of Iranian Senior Nuclear Scientist Mohsen Fakhrizadeh. Mohsen Fakhrizadeh, dubbed the father of the Iranian nuclear program, held the rank of brigadier general in Iran's Islamic Revolutionary Guard Corps (IRGC). According to intelligence reports, he was responsible for Iran's development of nuclear warheads on ballistic missiles. On Friday, November 27th, 2020, at 2:15 PM, Fakhrizadeh was ambushed while traveling in an armored Nissan Teana on a rural road in Absard. In the past, we've conducted many forensic analyses on...

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Episode 160 - Understeer vs. Oversteer show art Episode 160 - Understeer vs. Oversteer

Executive Protection and Secure Transportation Podcast

Understeer and Oversteer are terms used to explain vehicle characteristics, and they are important signals transmitted to you by the vehicle, it is how the vehicle communicates to you. It is the vehicle’s way of telling you what you should do next. In a nutshell, understeer and oversteer are the interrelationships of the front and rear ends of the car. If you drove around a corner or made an emergency maneuver that created 3200 lbs pushing on the CG of your vehicle – in the perfect world your tires would be pushing back 1600 lbs. front and rear. This would be called neutral steering, and...

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More Episodes

In today’s podcast we’ll be discussing Tires and Extreme Heat.

We have discussed the effects of cold weather on tires many times, but with the hot summer weather upon us (aka “the Dog Days of Summer“), we thought it would be an excellent time to discuss the effect of extreme heat on tires and vehicle control.

According to the national highway safety administration in 2017, there were 3.2 trillion miles put on tires in the US and 738 motor vehicle traffic fatalities in tire-related crashes. Many of these crashes are preventable through proper tire maintenance— including tire inflation, among other tire factors.

Basic Tires
To put it succinctly, the only connection between you and mother earth is your tires. Keep in mind that the tires don’t support the vehicle load. The pressurized air inside the tire supports the weight of the vehicle. The tire is just the container; this might sound obvious, but it is critical to understand.

Heat and Tires
Tire pressure will increase as the outside air temperature rises; tire pressure will go up approximately one pound for every 10 degrees Fahrenheit. Tire pressures are a vehicle characteristic that needs monitoring often. The Tire Pressure Monitoring System will warn the driver when the tire pressures are low but do not supply a warning when the pressure is too high.

Excessive heat will over-inflate the tires. Over-inflated tires can lose traction because the shape of the tire becomes deformed by extreme air pressure, decreasing the tire’s footprint on the road, limiting traction and stability. The tires can be more prone to damage. An over-inflated tire is stiffer and can cause loss of control when they come in contact with common road hazards like potholes.

Suggestions
We suggest that you look at the Temperature letter on your tire. The temperature grades are an indication of a tire’s resistance to heat. Sustained high temperature (for example, driving long distances in hot weather), can cause a tire to deteriorate, leading to blowouts and tread separation.

According to Tire Rack
The Uniform Tire Quality Grading Temperature Grade indicates the extent to which heat is generated or dissipated by a tire. If the tire is unable to dissipate the heat effectively or if the tire is unable to resist the destructive effects of heat buildup, then its ability to run at high speeds is reduced. The temperature grade is given by measuring a loaded tire’s ability to operate at high speeds without failure by running an inflated test tire against a large diameter high-speed laboratory test wheel.

Temperature Grades Speeds in MPH:

  1. Over 115
  2. Between 100 to 115
  3. Between 85 to 100

The speeds may seem excessive; however, these conducted tests are with a driver and no extra load. An SUV with 3 to 4 passengers and luggage, or in a security situation, armor, creates a much different test scenario. We strongly suggest always to have A-rated tires, plus daily evaluation of the tire pressures.

The NHTSA has a simple tire checklist which you can download by going to https://isdacenter.org/tirechecklist