Trevor Sheumack | Part 2 - the Michelin Man & rallying a beast!

Rear-wheel drive (RWD) sends engine power to the rear axle. It often gives a more balanced feel for performance driving and is common in many touring cars and rally cars because it can be tuned for predictable traction and handling.

A “sequential” gearbox lets you shift in order (typically up/down one gear at a time) rather than using an H-pattern. In racing, sequential gearboxes are popular because they can be faster and more consistent under load.

An “aeropackage” is a set of aerodynamic parts—like wings, splitters, and diffusers—designed to generate downforce and stabilize the car at speed. In racing, changing the aero package can effectively move a car into a different “spec” category by matching the rules for that year.

A “sequential kit” converts the gearbox control to sequential shifting, where you move through gears in order (up or down one at a time). This typically enables faster, more consistent shifts than a traditional H-pattern, which matters a lot in rally and circuit racing.

A “Hollinger H-patten box” refers to a Hollinger-built racing gearbox (the “H-pattern” describes the shift layout). Hollinger gearboxes are common in motorsport because they’re built to handle high torque and frequent, aggressive gear changes.

Phillip Island is a well-known Australian circuit used for track days and racing events. It’s a common venue for testing and driving performance cars because it has fast corners and strong elevation changes.

“Bassett” likely refers to a motorsport event or venue associated with the Bassett name, mentioned here in the context of a heritage-style gathering. These events typically focus on historic cars and period-correct setups.

Steve Winwood is mentioned as the person running an XR8 Falcon in rally events. In this context, he’s a key figure because the host describes interacting with him in the rally paddock and arranging to drive his car.

The Ford XR8 Falcon is a performance-focused variant of the Australian Ford Falcon, known for its V8 muscle-car character. In this segment it’s specifically tied to rallying, showing how a street-based V8 platform can be adapted for competition.

The “rally paddock” is the service area where teams work between stages—prepping cars, changing tires, and making adjustments. It’s a key part of rally life because the car’s setup can change quickly based on stage demands.

“Rally tyres” are tires built for rally stages, typically with tread patterns and rubber compounds designed for loose surfaces and repeated acceleration/braking. They’re also often set up differently than track tires, including how they’re cut or prepared for grip and wear.

“Cutting the tyre between stages” is a rally practice where teams modify tire tread between timed sections to manage grip and wear. By reshaping the tread, drivers can keep the tire working better for the next stage’s surface and conditions.

The speaker is talking about a Holden Commodore, a popular Australian V8 sedan used in rallying and motorsport. In this segment they specify it as a V8 variant ("V" then "VH"), emphasizing the appeal of a V8 sound and the way it makes strong torque for pulling out of corners and mis-shifts.

A V8 is an engine with eight cylinders arranged in a “V” shape. In performance driving, V8s are known for strong torque (twisting force) at lower engine speeds, which helps a car accelerate smoothly out of slow corners and makes it easier to drive on twisty roads.

Torque is the engine’s twisting force that actually turns the wheels. The speaker links torque to rally driving: with lots of torque, the car can still pull away even if you select the wrong gear, which is useful on uneven, twisty forest roads.

In rallying, “stages” are timed sections on closed roads, and “night stages” are those same timed runs done after dark. Driving at night changes visibility and grip expectations, so pace and caution become more about reading the road than just seeing it clearly.

A “camber event” refers to a rally route or event known for significant camber—sideways tilt of the road surface. Camber can strongly affect tire grip and how the car loads in corners, making setup and driving technique more critical.

“Silver fern” is used here as the name of a rally event in New Zealand. The term is functioning like an event title, and it signals the specific competition the speaker wants to enter with their Commodore.

New Zealand is the country the speaker wants to rally in, specifically referencing an event there. Rallying in New Zealand is known for long, scenic stages and a mix of road surfaces that can be very different from Australia’s typical routes.

Michelin is a major tire manufacturer, and the speaker is describing a business timeline involving Michelin’s distributorship. For car enthusiasts, Michelin matters because tire choice is a huge part of rally grip and durability.

The Ford Mustang is a performance-focused American sports coupe that’s also been used in various one-make and touring-style racing series. In the podcast context, it’s mentioned as part of the event lineup (like a “Mustang Cup”), which highlights how the car can be raced in a structured competition format. That’s why it comes up alongside other racing categories—because it’s a recognizable platform for motorsport.

TCR is a touring-car racing formula that uses production-based front-wheel-drive cars with standardized rules. It’s designed to be relatively cost-controlled compared with top-tier touring categories, which is why it shows up across multiple regions.

The Audi R8 is a high-performance sports car known for its mid-engine layout and track-capable performance. The podcast mentions an “Audi R8 Cup,” which refers to a racing series built around the R8, showing how it’s used as a dedicated competition platform. It also helps explain why the R8 comes up in a discussion of different racing programs and series.

Asian Le Mans refers to endurance racing in the Le Mans style held in Asia, typically featuring multi-hour races and prototype or GT-style machinery. In this segment, it’s treated as one of the major ongoing programs that requires large tire logistics.

In motorsport logistics, “containers” refers to standardized shipping units used to move large quantities of tires and equipment between regions. The host’s mention of container counts highlights how tire supply chains are managed like industrial freight operations.

Queensland Raceway is a motorsport circuit in Australia used for racing events. In the segment, it’s referenced as the location for a speed series event, which helps explain why tire supply and timing are critical.

In racing tire talk, “wets” are tires designed for wet or very damp track conditions. They use tread patterns and rubber compounds optimized for water evacuation and grip when the surface isn’t dry.

“Quality tyres” in this context means the approved race tires provided for the event. Once the tires are in place and the team has them set up, the focus shifts to monitoring and adjusting pressures and setup within the manufacturer’s or series’s guidelines.

“Pressure settings” are the tire pressures teams set before and during an event. In racing, pressure affects the tire’s contact patch shape, grip, and how the tire heats up across the tread.

“Recommended suspension” refers to the specific suspension setup a team is advised to use, such as spring/damper settings and alignment-related geometry. Suspension tuning changes how the car loads the tires, which directly impacts traction and tire wear.

Sydney Motorsport Park is a racing circuit in Australia used for touring car and other motorsport events. The host mentions it because different circuits load tires differently, which affects setup and tire management.

“Phillip Barlin” appears to refer to Phillip Island, a well-known Australian circuit. The context is circuit-specific tire loading, so the key idea is that different tracks require different tire and setup strategies.

Winton is a racing circuit in Australia (Winton Motor Raceway). The host uses it as another example of how circuit layout and conditions change tire loading and therefore tire pressure/setup needs.

In motorsport, “temperature” is the track and tire temperature that drives how tire grip and wear behave. Warmer conditions generally increase tire operating temperature, which can require pressure adjustments to keep the tire in its ideal working range.

Darwin refers to racing conditions in Australia’s Darwin region, which the host associates with higher temperatures. In practice, hotter conditions can change tire operating temperature, prompting pressure adjustments.

“Recommended guidelines” are the target ranges and procedures teams are advised to follow for tire pressures and related setup. In racing, staying within these ranges helps keep tires operating in their intended temperature and grip window.

MotoGP is the premier motorcycle road-racing championship run by the FIM. It’s where manufacturers and teams develop race-specific engines, electronics, and tires to compete at the highest level.

“Formula Leone” appears to be a transcription error for a motorsport “Formula” series. In context, it’s likely referring to a major open-wheel racing category where Michelin competed.

“Super touring” refers to a touring-car racing era/format known for highly regulated, production-based cars and close competition. The speaker contrasts that era’s tire secrecy and technology with modern, more standardized racing tires.

“Confidential tyres” describes race tires treated as tightly controlled, proprietary technology. The speaker emphasizes that teams couldn’t even store them in garages and that losing one could be catastrophic.

Bathurst most likely refers to Mount Panorama in Bathurst, Australia, famous for endurance touring-car racing. It’s a key venue where tire strategy and reliability matter a lot, especially in long events.

A “three hour” race is an endurance format where teams and riders manage tires, fuel, and consistency over a long continuous effort. The speaker’s point is that these longer races were especially enjoyable and demanding on equipment like tires.

“Suzuki flat” is likely a transcription error or shorthand for a specific engine configuration or bike description. In context (“flat out”), it may not be a technical term at all, so it’s not reliable enough to treat as a defined automotive concept.

GTP is a motorsport category name used for Grand Touring Prototype-style racing, where purpose-built prototype cars compete under specific rules. In the transcript, it’s referenced as the kind of racing environment where tire and team dynamics can overlap with other series.

A street circuit is a race track laid out using public roads, with barriers and temporary track markings. Canberra’s street circuit is a specific example where rallying or touring-style competition happens on city streets rather than a purpose-built track.

Lakeside refers to a motorsport venue used for testing and racing, where teams can run controlled sessions to evaluate tires and setup changes. In this segment, it’s tied to a “secret test” in 96 and the tire experiment that produced measurable lap-time gains.

“Rolling” tires in racing usually means pre-conditioning them—warming them and getting them into their effective operating window before a run. The context here is a tire test where the team pushed the tires down the grid and then measured lap-time differences over a race distance.

“Pushing them down the grid” describes moving the car and/or tires into position on the starting grid so they can be prepared and managed for optimal temperature and readiness. In racing, tire temperature and track conditions strongly affect grip, so timing and positioning can change performance.

“Tires on rims” means mounting the tires onto the wheel rims (the wheel’s metal structure) before installing them on the car. This matters in testing because teams can control tire selection, mounting consistency, and how quickly the car can be returned to the track.

Dunlop is a major tire brand that has supplied tires to various motorsport categories. In this segment, it’s mentioned as the earlier tire supplier before switching to Michelin.

A four-wheel-drive (4WD) car sends power to both the front and rear axles, improving traction—especially on loose or slippery surfaces. In racing, 4WD can make tire differences feel more dramatic because grip limits are reached differently than in two-wheel-drive cars.

The Toyota Racing Series is a motorsport championship in New Zealand that’s referenced here as a place where the speaker had involvement. The segment focuses on tire supply and how Michelin became the official tire for the series.

A tire supplier is the company that provides the tires used by a racing series or team. In motorsport, the tire supplier can strongly affect grip, tire wear, and overall competitiveness.

Formula Renault was a European single-seater junior racing series that helped drivers move up the ladder toward higher-level open-wheel categories. It’s often described as a “stepping stone” because many drivers used it to build racecraft and attract attention from bigger teams.

Formula Ford is another historic junior open-wheel racing category known for emphasizing driver skill and mechanical simplicity. It’s frequently used as an entry point before moving into more powerful series like Formula 3.

F3 typically refers to Formula 3, a well-known junior open-wheel series that sits above entry-level categories. It’s a common next step for drivers aiming to progress toward top-tier single-seater racing.

Keita Mazepin is mentioned as an overseas driver in the Toyota Racing Series context. In junior open-wheel racing, driver lineups like this are important because they reflect the level of competition and the talent pipeline.

Simon Evans is named as one of the drivers who would take the car out at Oren Park. The segment frames this as a planned driver test, with Evans and Neil Bates sharing the driving duties.

Neil Bates is mentioned alongside Simon Evans as a driver who would take the car out at Oren Park. In a motorsport context, naming specific drivers signals who had the opportunity to evaluate the car’s behavior.

Greg Rust is described as a “Rookie” who got a chance to sample the car. This highlights a common motorsport practice: letting less-experienced drivers get seat time to learn the car and provide feedback.

A “24 hour” refers to endurance racing where cars must keep running for an entire day, typically with driver changes and pit stops. The host is talking about Dubai’s 24-hour event as a major racing opportunity.

Axle stands are safety supports used to lift and hold a vehicle or race car securely while work is performed underneath. The host mentions them to paint a picture of the workshop setup during the racing project.

Midget speed cars are small, lightweight open-wheel race cars commonly used in short-track racing. The host uses them as a description of what the workshop contained before the team planned something bigger.

“Air freighted” describes shipping parts or vehicles by aircraft to reduce transit time. In the excerpt, the team uses it to get a replacement “Raynard” quickly enough to make the event.

A “rider truck” is a support vehicle used to transport equipment and personnel in motorsport logistics. The speaker mentions having one as part of the team’s setup for moving and supporting the car and crew.

A-frame stands are rigid support frames shaped like an “A” used to lift and hold a car securely in a paddock or garage area. In the excerpt, they’re used to leave the race car safely stationary overnight.

A “shunt” in motorsport is a collision or impact, often a relatively sudden rear-end or side contact during racing. The speaker uses it as a shorthand for the kind of crash damage that could happen over a weekend.

“Mansel” refers to Nigel Mansell, a legendary Formula 1 driver known for aggressive driving and frequent headline-making incidents. Here, the speaker references a specific shunt that happened during that same racing weekend.

The Nürburgring is a famous German motorsport venue known for its demanding track layouts and use as a benchmark for performance cars. In the excerpt, it’s referenced as a place where race teams ran Porsche RSRs and other entries.

“Dubai 2008” refers to a specific racing event in Dubai that the speaker participated in. It’s used as a timeline anchor for the story about joining a driver lineup and racing a particular car class.

Historic Formula Forward refers to a vintage racing category for cars built to the Formula Forward rules, raced in a historical context. In this segment, it’s the category the speaker’s mates were competing in and the reason he tried to locate his old build.

A hill climb car is set up for racing up a steep course rather than around a closed circuit. Converting a car to hill climb typically involves changes to gearing, suspension setup, and sometimes the engine and chassis to suit the shorter, uphill acceleration-focused runs.

In this context, “engine” is being used specifically to describe that the FRA-01 was converted to a hill-climb configuration with a different powerplant than the original. That matters because engine swaps can change how the car balances, accelerates, and fits within the chassis.

A chassis is the car’s structural foundation that suspension, drivetrain, and body components attach to. The segment notes the chassis was changed during the hill-climb conversion, which can significantly affect handling and how the car responds to setup changes.

In a race car chassis, “uprights” are the structural parts that carry the wheel hub and connect the suspension to the chassis. They’re critical for steering geometry and for keeping the suspension loads in the right place under cornering and braking.

The “COVID lockdown period” is used to explain how the builder had time and motivation to fabricate parts and assemble the car. It highlights how restrictions changed day-to-day work, but also created opportunities for hands-on projects.

“Wishbones” are suspension control arms (often A-arms) that locate the wheel and determine how it moves relative to the chassis. Their shape and mounting points strongly affect camber change, ride behavior, and tire contact during hard driving.

The segment focuses on restoring a formula-style race car, including cutting the chassis and rebuilding key suspension components. It also covers sourcing a period-correct racing engine to complete the build.

The “Mark II Escort panel van” refers to a Ford Escort in the Mark II generation, configured as a panel van. In rally and club-racing circles, these are often used as donor vehicles because they’re common, parts are available, and some examples have been fitted with competition engines.

Stephen Brooks is referenced as the person who built or campaigned the “championship winning engine” mentioned in the story. The host uses him to establish the engine’s motorsport pedigree.

“Spa Classic” is an event associated with the Circuit de Spa-Francorchamps, focused on classic cars and historic racing. It’s often more festival-like than a pure race weekend, with lots of attendance and on-track demonstrations.

The BMW E30 M3 is a classic homologation-era performance car from BMW, built around the E30 3 Series platform. It’s especially famous for rallying and touring-car racing success, which is why it shows up in group racing contexts like the one your guest mentions.

Group A was a historic FIA touring-car racing category that required cars to be based on production models, with rules around homologation and modifications. When someone says they race in “group A,” they’re pointing to a specific rule set and competition class rather than just general racing.

The Nürburgring is Germany’s legendary motorsport complex, and the “Short Circuit” refers to the shorter Grand Prix–style layout rather than the full Nordschleife. It’s still a high-speed, technical track, so it’s a serious place to run a race-prepped car.

Zandvoort is a well-known Dutch circuit on the North Sea coast, famous for its tight, flowing layout and the steep camber changes that challenge tires and braking. It’s a frequent venue for European motorsport events, so shipping a race car there is a real logistics and competition step.