California Is Trying To Ban Aftermarket Tires Now?
MartiniWorks Podcast
California Is Trying To Ban Aftermarket Tires Now? MartiniWorks Podcast · Jun 12, 2026
California Is Trying To Ban Aftermarket Tires Now?

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California Is Trying To Ban Aftermarket Tires Now?
Part

HKS coilovers

Coilovers are suspension parts that let you change how high or low the car sits. HKS is the brand, and these are aftermarket versions people use to improve handling or get the look they want.

Brand

Olin's

They mention “Olin’s” as something expensive, but the clip doesn’t say what it is. Without more context, it’s hard to tell which exact car part or brand they mean.

Part

Olin coilovers

Coilovers are aftermarket suspension parts that let you adjust how high the car sits and how stiff it feels. They’re commonly used to improve handling compared to stock suspension.

Honda S2000
Car

Honda S2000

The Honda S2000 is a small two-seat sports car. It’s known for feeling exciting to drive, especially because the engine revs high. The podcast is asking when one is going to be finished or updated.

Mazda Rx7
Car

Mazda Rx7

The Mazda RX-7 is a sports car made by Mazda. It’s known for having a special type of engine called a rotary engine. The podcast is asking for an update on it, implying there’s been progress or changes before.

Concept

car transported

They’re talking about shipping a car to someone else. The problem is that it can involve multiple companies and unclear timing, so you can’t easily tell what’s going on.

Tesla Semi
Car

Tesla Semi

The Tesla Semi is an electric truck meant for hauling goods. It’s designed for commercial use, like moving freight for companies. The podcast is talking about it from the perspective of truck drivers and transport businesses.

Concept

logistics freight transport schedule

It’s basically the plan for how trucks move packages: routes, timing, and delivery order. They’re saying AI could help organize that plan.

Term

RFID chip

An RFID chip is a tiny tag that can be detected by a scanner nearby using radio signals. The idea here is that it would let them identify where someone (and things near them) are.

Mazda Rx8
Car

Mazda Rx8

The Mazda RX-8 is a sports car from Mazda that uses a rotary engine (it doesn’t work like a normal piston engine). Here, they’re using it as an example of a car they could track using tech.

Porsche Panamera Sport Turismo
Car

Porsche Panamera Sport Turismo

This is a Porsche Panamera, but in a wagon-style body. It’s meant to be more practical for hauling stuff while still feeling like a performance Porsche.

Term

station wagon

A station wagon is like a sedan, but with more space in the back for cargo. It usually has a bigger rear opening so it’s easier to load things.

Term

rotary engine

A rotary engine is a type of engine that doesn’t use pistons like most cars. Instead, it uses a spinning part, and when it breaks, you may need to replace specific internal pieces—not just one generic part.

Term

coolant seal

In a rotary engine, sealing surfaces control compression and also separate coolant passages from combustion areas. If a coolant seal fails, coolant can leak into places it shouldn’t, which can cause overheating and internal damage that may require replacing major components.

Term

housing

The housing is the main engine part that the rotary rotor spins inside. If its inside surface gets damaged—especially from extreme heat—it may be too far gone to fix and you have to replace it.

Term

work hardens

Work hardening means the metal changes after being stressed—often becoming harder but also more brittle. The host is saying that if the rotary housing gets too hot, it can’t be machined back to good condition.

Term

resurfaced

Resurfacing means shaving/machining a worn surface to make it smooth and usable again. Here, they’re saying overheating can damage the rotary housing so badly that resurfacing won’t fix it.

Term

Renesis

Renesis is a specific version of Mazda’s rotary engine used in the RX-8. In this conversation, they’re comparing it to other rotary versions based on cost and how desirable they are.

Term

13B

13B is Mazda’s code name for a rotary engine family. They’re talking about whether it’s realistic to swap a 13B into an RX-8 instead of using the RX-8’s stock rotary version.

Term

REW

REW is a particular version of Mazda’s rotary engine. In this segment, they’re saying the REW is the “cooler” and more desirable one to swap, especially for an RX-8 build.

Concept

rotary on it

This is shorthand for a rotary engine swap—changing which rotary engine is installed in a car. The hosts quickly push back on the idea that you can “just” drop in another rotary, implying that fitment, intake/exhaust routing, and engine management details make swaps more involved.

Term

standalone ECU

A standalone ECU is the engine’s computer, but it’s an aftermarket one. When you swap engines, the stock computer may not work correctly, so people often use a standalone ECU to make the new engine run right.

Term

six speed

“Six speed” means the car has six forward gears. When you’re talking about engine swaps, the transmission choice matters because it changes how the engine’s revs line up with the gears.

Term

bridge port

A “bridge port” is a modification to a rotary engine’s internal passages. It changes how the engine breathes, which can make it idle and sound more extreme—closer to what people expect from a rotary.

Term

RMSS

“RMSS” sounds like another rotary modification option. They’re basically saying it’s still neat, but it won’t make the car behave exactly like a bridge port at idle.

Brand

Motegi Racing Wheels

Motegi Racing Wheels is a company that makes aftermarket wheels. The hosts are saying the wheels they use have survived a lot of abuse and still look good.

Brand

Kendas

Kenda makes tires. The hosts list it as one of the tire brands you can buy and have mounted as part of a package.

Brand

Contis

Contis refers to Continental tires. The hosts are saying you can choose them as part of a wheel-and-tire package they can mount and ship quickly.

Brand

Ironmans

Ironman is a tire brand. The hosts are saying it’s a good-value tire option they can mount and ship with wheels.

Term

offset

Offset is basically how the wheel sits relative to the car—toward the inside or the outside. It matters because it affects tire clearance and how the wider setup will fit.

Term

nine and a half

“Nine and a half” is the wheel width in inches. Wider wheels can change how the tire sits and how the setup fits in the wheel well.

Term

wider setups

A wider setup means using wider wheels and tires than the car came with. It can improve grip, but you have to make sure everything still fits without rubbing.

Term

S chassis

“S chassis” is a common enthusiast shorthand for Nissan’s S-chassis platform (notably the Silvia S13/S14/S15 generations). The hosts connect it to fitment choices like wheel offset and wheel widths for those cars.

Term

10 and a half inch wide wheels

10.5-inch wheels are wider than stock on many cars. Wider wheels can help with tire grip, but you need to ensure there’s enough clearance.

Term

fuel mileage

Fuel mileage means how far the car can go on a given amount of fuel. If tires create less rolling resistance, the car can often get better fuel mileage.

Concept

aftermarket tires

Aftermarket tires are tires you buy that aren’t the exact brand/model that came on the car from the factory. The discussion is about rules that might make it harder or more expensive to choose those tires.

Term

rolling resistance

Rolling resistance is how much energy your tires “waste” as they roll over the road. Tires with lower rolling resistance usually help the car use less fuel.

Term

EVs

EVs are electric cars. Since they run on stored electricity, anything that makes the car harder to move—like tire losses—can affect how far you can drive.

Term

drag coefficient

Drag coefficient is a measure of how much air resistance your car creates. Lower air resistance means the car needs less energy to go, especially at highway speeds.

Brand

Nankang

Nankang is a tire company that makes lots of different tires. The hosts are using it as an example of cheaper tires that showed up in the U.S. a few years back.

Brand

federal 595

Federal is a tire brand, and “595” is the name of a particular tire model. They’re mentioning it because it was relatively cheap compared with other options at the time.

Brand

lend 87 thunder

This part of the transcript sounds like it might be misheard. It doesn’t clearly match a known tire or car name, so it’s hard to explain accurately.

Term

anti dump, anti dumping tax

An anti-dumping tax is a government fee added to imported products when they’re priced so low that it looks unfair. In this case, it was meant to discourage cheap imported tires from undercutting local tire companies.

Term

treadwear

Treadwear is a number printed on some tires that’s supposed to hint at how long the tread might last. But it’s not a perfect prediction, and different brands can make it hard to compare fairly.

Term

tire pressure

Tire pressure is how inflated the tire is. The “right” pressure helps the tire sit correctly on the road; too high or too low can make it roll less efficiently and feel worse.

Term

rolling efficiently

Some tires waste more energy as they roll than others. The better the tire is at rolling smoothly, the less energy the car needs to keep going.

Brand

Michelin's

Michelin makes tires. They’re saying the car’s tire option was a Michelin setup bundled with a certain trim.

VB Subaru WRX
Car

VB Subaru WRX

The Subaru WRX is a sporty Subaru that’s meant to drive more like a performance car than a normal commuter. “VB” is the code for this newer generation of WRX, and they’re talking about whether tire rules would limit what owners can install.

Term

Michelin Pilot Sport Cup twos

Michelin Pilot Sport Cup 2s are a sporty tire model designed for strong grip. They’re mentioned because the WRX can come with them, and that could affect whether regulators allow similar aftermarket tires.

Term

homologation

Homologation is basically “official approval.” In car terms, it means a specific setup (like tires) is certified as meeting the rules, so regulators can say what’s allowed to match the approved configuration.

Term

mile per gallon

“Miles per gallon” (MPG) is a fuel-economy measure used in the U.S. It’s relevant here because tire regulations may be justified by small changes in fuel consumption caused by different tire rolling resistance.

Term

lower resistance tires

“Lower resistance tires” means tires that waste less energy as you drive. The concern is that making a tire more efficient might reduce grip, especially on wet roads. The exact outcome depends on the tire design.

Term

EV tires

“EV tires” are tires sold as being made for electric cars. They’re usually advertised to help the car go farther by reducing energy losses. The debate here is whether they’re truly different or mostly branding.

Term

traction

Traction is how well the tires can grip the road. If a tire is tuned for efficiency, it might not grip as well in some situations. The host is questioning whether you lose grip when you choose “lower resistance” tires.

Term

foam

The “foam” is something put inside the tire to change how it behaves. It can be used to reduce noise or vibrations, and sometimes companies also connect those changes to efficiency claims. The host is skeptical that the effect is meaningful.

Ferrari Luce
Car

Ferrari Luce

The Ferrari Luce is a Ferrari-related vehicle name mentioned in the podcast. The conversation suggests it’s connected to how and where it would be made. The podcast isn’t describing how it drives—more like the background of the project.

Term

zero emissions

“Zero emissions” means the car doesn’t put out exhaust pollution while it’s running. In practice, that usually points to electric cars rather than gas engines.

Term

grams per kilometer

“Grams per kilometer” is a way to measure how much exhaust pollution a car makes as it drives. The host is saying Japan uses numbers like this to set strict limits for car emissions.

Concept

California banning tires

The host is talking about California trying to restrict what tires people can buy or use. The bigger point is that if California changes the rules, other states may copy it.

Brand

SEMA

SEMA is a big U.S. group that supports the aftermarket car parts industry—things like upgrades and specialty equipment. The host is saying they help show why these car parts and builds are cool and worth keeping.

Term

collector's car

A “collector’s car” is a special registration category for older or special vehicles. The host is saying it can make it easier to register and keep these cars under rules that are different from everyday cars.

Tesla Model 3
Car

Tesla Model 3

The Tesla Model 3 is an electric car, meaning it runs on electricity instead of gasoline. It’s a sedan, so it’s built for normal daily driving. The podcast mentions it as a popular choice when someone asks what car you’d want.

Term

time attack

Time attack is when you drive on a track and try to set the fastest time. Instead of racing side-by-side, you’re mostly competing against the clock.

Honda Civics
Car

Honda Civics

The Honda Civic is a popular car that lots of enthusiasts modify. The host is using it as an example of the older tuning culture versus today’s EV-focused dreams.

Term

IC engine

IC engine is just a fancy way of saying a gas (or diesel) engine that burns fuel. The host is saying these engines may be phased out as rules and technology shift.

Term

twin turbo

Twin turbo means the car uses two turbochargers to make more power. Turbos help the engine feel stronger by pushing extra air into it.

Term

hot V

“Hot V” describes where the turbo setup sits on a V-shaped engine. The idea is to keep the exhaust path short so the turbo can spool up faster, but it makes the engine bay run hotter.

Concept

government aspect of like regulation

They’re talking about government rules that decide what car modifications are allowed. If the topic is aftermarket tires, those rules can determine which tire options you can legally use on the road.

Concept

takeover culture

“Takeover culture” is when car groups show up in public areas and do disruptive, attention-grabbing driving. The host suggests it causes enough trouble that authorities and communities respond with restrictions.

Concept

social media aspect of everything

They’re saying social media can make bad or dangerous car behavior spread faster. More attention can lead to more complaints and more restrictions.

Concept

tracks getting shut down

They’re talking about race tracks closing because neighborhoods are growing around them. When people move closer, they may complain about noise or disruption, and the track can lose permission to operate.

Datsun 240Z
Car

Datsun 240Z

The Datsun 240Z is a famous old sports car from the 1970s. The host is saying that back then it was cheaper to buy and fix, but now the car and its parts cost a lot more.

Topic

Formula One

Formula One is a famous world-level race series. The host brings it up to show that lots of people are talking about racing online right now.

350Z
Car

350Z

350Z usually means the Nissan 350Z. It’s a well-liked sports car, and people commonly modify them—like upgrading wheels and tires—to make them handle better.

Brand

Apex wheels

Apex wheels are aftermarket wheels from the Apex brand. People buy them to change how the car looks and how the tires sit and grip.

Brand

Conti tires

“Conti” is short for Continental, a tire brand. Better tires can improve how much traction your car has and how it feels when you drive hard.

Brand

KWs

“KWs” probably means KW suspension parts, like coilovers. People upgrade these to change the car’s stance and handling.

Brand

Continental Tires

Continental is a well-known tire company. They’re talking about using Continental tires on their cars as a practical stand-in before they switch to the official race tire.

Term

spec racing

Spec racing means everyone has to use similar equipment so it’s a fairer fight. They’re saying the official race tire is costly, so they’ll use another tire first to learn what the car is doing.

Term

baseline

A baseline is the starting point you compare everything to. They’re using one tire first so they can tell how the car changes when they switch to the official race tire.

Term

spec tire

A spec tire is the exact tire the racing series requires. They’re saying that tire is pricey and not always easy to deal with, so they’re testing first.

Term

ECS-02

ECS-02 is a particular Continental tire model. The host’s point is that it comes in many different sizes, so you can choose one that fits your wheels and your car.

Term

DWS-06

DWS-06 is a specific Continental tire model. They’re saying it’s available in lots of sizes, which helps when you’re matching tires to your wheels.

Mazda MX-5 / Miata
Car

Mazda MX-5 / Miata

The Mazda Miata is a small two-seat sports car made for driving enjoyment. It’s known for being light and easy to handle. The podcast is mentioning it in a list of cars that people set up with different tire arrangements for better traction.

Term

staggered setups

Staggered setup means the front and rear tires aren’t the same size. Usually the rear is wider, which can help the car grip better and look more aggressive.

Term

aspect ratios

Aspect ratio is basically how tall the tire’s sidewall is compared to its width. Changing it can affect ride comfort and how the tire looks on the wheel.

Term

fitment

Fitment means whether the wheels and tires fit the car properly. People talk about it when they’re trying to avoid rubbing and get the look they want.

Term

stance setup

Stance setup is about how the car looks—especially how low it sits and how the wheels sit in the arches. It’s mostly an appearance goal, but it also depends on tire and wheel sizes fitting correctly.

Brand

Dodge

Dodge is a car brand. The hosts initially thought the apparel was from Dodge, but then they corrected it to Ram, which is the truck brand.

Toyota Tacoma
Car

Toyota Tacoma

The Toyota Tacoma is a popular pickup truck from Toyota. It’s the kind of truck people often modify, and here it’s mentioned because a brand used the wrong truck image for their apparel.

Dodge Neon
Car

Dodge Neon

The Dodge Neon is a small, everyday car. The podcast is mentioning it because someone posted a picture or information that didn’t match the correct pre-production details. It’s basically a discussion about an incorrect vehicle photo.

Dodge Ram
Car

Dodge Ram

The Dodge Ram is a pickup truck, meaning it’s designed to carry cargo and handle work. It’s a common type of vehicle people use for hauling or daily driving. The podcast mentions it mainly in relation to marketing posts and messaging.

Dodge Stratus
Car

Dodge Stratus

The Dodge Stratus is a regular four-door sedan, made for everyday driving. In the podcast, it’s mentioned because someone thinks a post may have shown the wrong car. It’s basically part of a correction about vehicle identity.

Porsche 911
Car

Porsche 911

The Porsche 911 is a famous sports car made by Porsche. It has a very recognizable look, so people often identify it even in pictures. The podcast is mentioning it as a car that people might think they’re seeing, even when the image isn’t real.

2027 BMW M2 with XDrive
Car

2027 BMW M2 with XDrive

The BMW M2 is a sporty BMW made by BMW’s performance team. “XDrive” means the car sends power to all four wheels, which can help it grip better, especially on wet or slippery roads.

Toyota MR2
Car

Toyota MR2

The Toyota MR2 is a sports car that’s built to feel agile and fun to drive. Some versions are known for having the engine placed in the middle of the car. The podcast is discussing rumors or updates about a possible new MR2.

Dodge Viper
Car

Dodge Viper

The Dodge Viper is a very powerful sports car made for performance. People talk about it a lot because it’s known for being extreme and memorable. The podcast brings it up in the context of a rumored or imagined successor concept.

Audi R8
Car

Audi R8

The Audi R8 is a supercar, meaning it’s built for very high performance. The podcast mentions it in relation to a new reveal and clarifies that the new car isn’t meant to replace the R8. So it’s part of a discussion about what’s coming next.

Car

Nuvalari

The Audi Nuvalari is a limited-run Audi supercar—499 cars, according to the host. It’s named after a famous Italian race driver and is expected to start being built in early 2027.

Lamborghini Temerario
Car

Lamborghini Temerario

The host claims the Audi Nuvalari is using a 4.0-liter V8 that comes from the Lamborghini Temerario. That’s important because the engine is a big part of how the car feels and performs.

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