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Episode 442: 2025 Lexus IS 500, Space Shuttle Tire Testing Robot

Episode 442: 2025 Lexus IS 500, Space Shuttle Tire Testing Robot

Unnamed Automotive Podcast Mar 29, 2026 41 min
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About this episode

The hosts kick off with a long, playful preamble before diving into two very different stories: a critical drive review of the 2025 Lexus IS 500 “Ultimate Edition” and Benjamin Hunting’s fascinating NASA tale about shuttle tire testing. The IS 500 discussion turns into a disappointment rant—an old IS platform with a great V8, but mismatched tuning, clunky behavior, dated tech, and even traction-control trouble in light snow. The space shuttle segment explains how extreme braking loads and tire blowout risk led NASA to use a remote “tire assault vehicle” tank to safely drill and vent failing tires.

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Technical Too Afraid to Ask
Concept

sports sedan

"...you say, I get into like podcast voice... start talking about the car that you've been driving, which from what I understand... is a sports sedan..."

A “sports sedan” is a regular sedan, but tuned to drive more like a performance car—usually quicker and more fun to steer. The hosts are debating whether the car they’re discussing really fits that label.

Car

Lexus IS 500

"Not only is it 2026, but it's been 2026 for a while and yet I was given the Lexus IS 500 to drive even though it hasn't been in production now for at least five, six months."

The Lexus IS 500 is a sportier Lexus IS sedan with a bigger, more powerful engine than the regular models. Here, they’re talking about a specific 2025 example and why it’s special because it’s limited.

Term

ultimate edition 009 of 500

"The model I had had a placard on the console that said ultimate edition 009 of 500. So between Canada and the US, I think they made 500 and I think Canada got 140 of them."

That phrase means the car is part of a small, numbered batch—like “#9 out of 500.” Limited numbers can make the car more desirable to buyers later.

Concept

low production vehicle

"I was given the Lexus IS 500 to drive even though it hasn't been in production now for at least five, six months. I am going to, this is a low production vehicle."

“Low production” means not many of these cars were made. When fewer exist, some buyers are willing to pay more, especially later.

Concept

resale value

"Yeah, because you wanted to keep the resale value really high for the other 100. I always think about Lexus resale value whenever I'm driving there and I try to be super respectful of that."

Resale value is how much the car is worth after you’ve owned it for a while. They’re saying they try to drive carefully because it can help the car keep its value.

Car

Bmw M

"...our door. They wanted to go up against, you know, BMW M and Audi RS and AMG and all that stuff, all the ..."

The BMW M Coupe (E36) is a small, two-door sports car made by BMW’s performance division. It was built to be a serious driver’s car and to compete with other sporty coupes. In the podcast, it’s mentioned as one of the cars BMW aimed to measure up against.

Concept

F sport

"And they're like, all right, we're going to come up with something called F sport. And we're just going to call this the F..."

“F Sport” is Lexus’s label for the sportier versions of their cars. It usually means the car is tuned and equipped to feel more performance-focused.

Term

fake exhaust tips

"had fake exhaust tips. At the back, it had quad exhausts that were like stacked at an angle of each other... the actual exhaust was behind that."

“Fake” exhaust tips are decorative outlets that don’t actually connect to the real exhaust flow. They’re used to create a certain visual effect, but enthusiasts often dislike them because the sound and airflow don’t match the appearance.

Term

1JZ inline six

"the first gen IS had a 1JZ V8 under the hood, V6, sorry, 1JZ inline six, which is a very popular engine related to the 2JZ that had been in the Supra."

The 1JZ is an inline-six engine that’s well known for being strong and popular with car tuners. Many people add a turbo to make it much faster.

Term

turbo

"And a lot of people would turbo that engine. They would turbo the heck out of it."

A turbo is a device that helps the engine make more power by pushing extra air into it. It’s a common upgrade for faster performance.

Concept

torsional rigidity

"You had this platform that was overly strong. Like it didn't need to have the torsional rigidity that it had because suddenly it had a roof."

Torsional rigidity is how well the car’s body resists twisting. If a car is built stiffer than it needs to be, it can end up heavier without necessarily improving how it drives.

Term

V8

"It's a two door and it had this, the RCF had this sweetheart of an engine. It's fantastic. It's a great V8"

A V8 is a type of engine with eight cylinders. People often like it because it can sound great and feel strong.

Concept

grand touring car

"Which is one of the best looking cars of the last decade, regardless of price. But was not overly performance oriented. Well, it's a grand touring car."

A grand touring car is built for long drives. It’s meant to be comfortable and pleasant, not just fast or track-focused.

Company

ZF

"it has an eight speed automatic transmission, not the ZF transmission that everyone's so happy with. Just another transmission that also happens to have eight speeds."

ZF is a company that makes car parts, including transmissions. Some drivers really like ZF gearboxes because they tend to shift smoothly and feel well matched to the engine.

Term

winter tires

"It was on winter tires. It was on continental winter tires. I had a snowfall of about two, two and a half inches."

Winter tires are made to grip better when it’s cold and snowy. They help a lot, but they don’t guarantee you’ll never get stuck if the road is tricky.

Company

Continental

"It was on winter tires. It was on continental winter tires. I had a snowfall of about two, two and a half inches."

Continental is a well-known tire brand. The host is saying their winter tires were from Continental, which matters because tire choice strongly affects how well a car can move in snow.

Term

manual

"...it only, it had 400 horsepower, but it was a manual and it didn't have like invasive traction control like this."

A manual is a car where you shift gears yourself using a clutch pedal and gear lever. Here it’s mentioned because it can change how the car behaves and how much electronic intervention you feel.

Concept

0 to 60 time

"Everything else about it? What is that, 0 to 60 again? 4? 4 or something like that?"

“0 to 60” is how fast a car goes from stopped to 60 mph. It’s a common performance number, and here it’s being used to judge whether the car is worth the money.

Term

paddle shifters

"It has paddle shifters. If you want to do that kind of thing, I guess, I never did."

Paddle shifters let you tell the car to change gears using buttons on the steering wheel. The speaker tried them, but says the car doesn’t feel engaging enough to make you want to use them.

Concept

generation

"IS is in its third generation... And that means that this last one has been on the market in its current platform, and chassis. For like 12 years."

A “generation” is the big redesign phase of a car. When a generation takes a long time, it can mean the car feels less up-to-date than competitors.

Concept

platform and chassis

"And that means that this last one has been on the market in its current platform, and chassis. For like 12 years. That's a long time."

The platform/chassis is the car’s basic skeleton and engineering base. If it stays the same for a long time, the car may feel dated unless Lexus keeps updating it.

Car

BMW M340i

"I mean, we're in an era where the M340i has an absurd amount of horsepower."

The BMW M340i is a faster, sportier version of the BMW 3 Series. They mention it to show that other cars in this category are making a lot of power.

Concept

horsepower

"...the M340i has an absurd amount of horsepower... we say that for reference, that six-cylinder makes almost 400 horsepower..."

Horsepower is a number that represents how much power the engine can make. The speakers are saying that even when the horsepower looks high on paper, the driving feel can be different.

Car

Lexus LC500

"I think this engine's dead. I think that the LC500 will be the last time we see it. I think we're out of that era."

The Lexus LC 500 is Lexus’s V8 grand tourer. The speaker is basically saying it may be the last of its kind before the industry moves on to different powertrains.

Concept

tire blowout risk grading (green/yellow/red)

"So NASA came up with this system where they were grading tires after landing. So a tire that was graded green was one that was safe. A tire that was graded yellow was one that could potentially be dangerous for a blowout. And a tire that was graded red was one that was going to blow out."

They rated the tires after landing using colors. Green was okay, yellow meant it might fail, and red meant it was basically going to fail. They used this to judge how risky the tire was even if they couldn’t predict exactly when it would fail.

Concept

visible wear + temperature + mission count used for tire ratings

"The ratings were based on like visible wear on the tire, temperatures that the tire had been exposed to. And the number of missions that have been run on, I guess, like the rear tires, they were good for one mission because they were the ones that hit first."

The shuttle tire grading wasn’t just one measurement—it combined visible wear, the temperatures the tires experienced, and how many missions the tire set had already been used for. They also accounted for which tires took the first impact, since those would wear faster. This is an early example of data-driven component life management.

Concept

57-ton tire rack impact test (water-jet propelled)

"One was they built this like 57 ton tire rack. It was pretty cool. It would accelerate to like 200 miles an hour or 300 miles an hour in two and a half seconds... And then once it was going at like the proper speed, it would, they would slam it into the ground and they would check out for wear and damage, right?"

They built a huge test machine to simulate extreme tire speeds and then crash the tire into the ground on purpose. The goal was to see how much damage and wear happened after a realistic impact. It’s like a lab version of what the tires would experience during shuttle landings.

Company

Tamiya

"...he went and bought a Tamiya 116 scale Tiger II tank."

Tamiya is a company that makes model kits and hobby vehicles. In this story, they used one of those model tanks as the starting point for a custom remote robot.

Part

temperature probe

"...use the temperature probe to find a safe spot and then start drilling."

A temperature probe measures how hot something is. The host is saying it helped the operator find a safer area to drill/test the tire.

Concept

V1 program

"...bunch of Nazi scientists... involved in the V1 program, which was the buzz bombs and rocket bombs..."

The V1 was a German missile used in World War II. The speaker is saying some of the people who worked on it later helped with rocket and space technology.

Concept

Operation Paperclip

"...the American government brought a bunch of Nazi scientists over to the United States who had been involved in the V1 program... It was called Operation Paperclip."

After World War II, the U.S. brought over a lot of German scientists. The idea was to use their expertise to help with rockets and space research.

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