Cars with huge wheels: what are they called and what are they for?

Road giants: why some cars ride on wheels as tall as a person

Have you ever seen a car whose wheels are taller than you are? Such cars attract attention at exhibitions, off-road and even in city parks - they are impossible not to notice. But what are they called, why are they needed and why don’t they drive on regular roads? In this article we will look at all types of vehicles with huge wheels: from agricultural giants to extreme SUVs for show.

It’s worth immediately distinguishing between two key types: working machines (tractors, loaders) and entertaining/extreme (monster tracks, rock bouncers). The first ones are designed for difficult conditions - swamps, quarries or fields, where standard tires will simply sink. The second ones are for spectacular jumps, drifting and competitions, where the size of the wheels directly affects the height of the obstacles to be overcome. And if agricultural machinery with wheels with a diameter of 2-3 meters still somehow fits into the familiar world, then monsters with 68-inch tires are already a separate subculture.

In Russia, such machines are rare, but they can be seen at specialized exhibitions (for example, Comtrans or Agrosalone), in amusement parks or on closed off-road competition tracks. And some enthusiasts even convert ordinary pickup trucks to fit huge wheels - but this requires serious modifications to the suspension, transmission and, of course, budget.

1. Monster tracks: kings of shows and competitions

If you imagine a car with huge wheels, most likely what is in front of your eyes is monster track (monster truck). These are specially prepared pickup trucks or body-on-frame SUVs in which standard wheels are replaced with tires with a diameter of 66 to 82 inches (1.7–2.1 meters!). They were created for American shows Monster Jam, where cars make incredible jumps while crushing cars (yes, this is part of the program).

Key features of monster tracks:

• 🔧 Tires: special tubeless tires are used BKT or Goodyear with an aggressive tread that can withstand pressures of up to 10–15 psi (3–4 times lower than conventional tires).
• 🚗 Body: as a rule, this is a lightweight fiberglass copy of a production pickup truck (for example, Ford F-150 or Chevrolet Silverado), mounted on a robust space frame.
• ⚡ Engine: 8–10 liter engines (often from trucks Caterpillar or Detroit Diesel) turbocharged, producing 1500–2000 hp.
• 💥 Suspension: shock absorber strokes reach 50–70 cm, and the struts themselves are made to order (for example, by Fox Racing).

Fun fact: Monster Tracks don't have brakes on the rear axle - instead they use a hydraulic brake on the driveshaft. But the steering is duplicated: if the hydraulic booster fails, the driver can control the car manually (although this requires enormous effort).

⚠️ Attention: In Russia, monster tracks are prohibited for driving on public roads. They can only be used in closed areas with the permission of the traffic police. An attempt to drive onto the highway faces a fine of up to 50,000 rubles and confiscation of the vehicle.

2. Bigfoot and rock bouncers: SUVs for extreme sports enthusiasts

If monster tracks are a show then bigfoot (Bigfoot) and rock bouncers (rock bouncers) is a serious off-road. These machines are designed to overcome rocks, deep holes and almost vertical climbs. Unlike monster tracks, it is not the height of the jump that is important here, but ability to “crawl” over rocks without damaging the suspension.

The most famous representative is Bigfoot #1, created in 1975 by Bob Chandler. It was he who laid the foundation for the culture of huge wheels in off-road. Modern rock bouncers are equipped with:

• 🔨 With wheels 40-54 inches (1-1.4 m) in diameter with ultra-low pressure (2-5 psi) for better traction.
• 🛠️ Portal bridges (for example, from Currie Enterprises), which raise the wheel axle higher, increasing ground clearance.
• 🔋 Two engines (sometimes they install V8 from LS Chevrolet + electric motor for instant torque).

The main difference from monster tracks is the absence of shock absorbers as such. Instead they are used hydraulic struts with adjustable stiffness, which allow you to “press” the wheel against the stone for better grip. For example, legendary King Shocks produces stands with up to 30 inches (76 cm) of travel specifically for rock bouncers.

Machine type	Wheel diameter	Main purpose	Model example
Monster track	66–82 inches (1.7–2.1 m)	Shows, jumping, competitions	Grave Digger, Max-D
Rock bouncer	40–54 inches (1–1.4 m)	Extreme off-road, rock climbing	Bigfoot #19, Cliffhanger
Agricultural tractor	up to 2.5 m	Work in fields and swamps	Case IH Steiger 620
Mining truck	up to 4 m	Transportation of ore in quarries	Caterpillar 797F

3. Agricultural giants: tractors on giant wheels

Far from shows and extreme tracks, there are cars that need huge wheels for a very practical reason - so as not to drown in mud or sand. It's about agricultural tractors and timber transportersequipped with tires with a diameter of up to 2.5 meters. For example, Case IH Steiger 620 or John Deere 9620R They use wheels the height of a double-decker bus!

Why such sizes?

• 🌾 Low ground pressure: Large contact patch reduces soil compaction (critical for crops).
• 🚜 High ground clearance: allows you to overcome furrows and bumps without the risk of getting stuck.
• 💰 Fuel economy: Wide tires reduce rolling resistance on soft ground.

Interestingly, such tractors are often equipped double twin wheels (4 tires per axle), which further distributes the load. And some models like Versatile 620, can “grow” in width: the wheelbase is adjusted hydraulically to suit different row spacings.

⚠️ Attention: In Russia, tractors with wheels with a diameter of more than 2 meters require a special permit to move on public roads. They are transported on low-loader trawls or dismantled into parts.

4. Quarry equipment: dump trucks with wheels as tall as a house

If you think tractors are the limit, then check out mining dump trucks. For example, Caterpillar 797F or BelAZ 75710 equipped with wheels with a diameter of up to 4 meters! These vehicles haul hundreds of tons of ore in quarries, and their tires cost as much as a luxury car—up to $50,000 apiece.

Features of career giants:

• 🏗️ Tubeless tires with steel cord, capable of withstanding a load of up to 100 tons per wheel.
• 🔥 Fire extinguishing system in the tire: when overheating, the carbon dioxide cylinder is automatically activated.
• 🛢️ Central pumping system: The driver can change the tire pressure directly from the cab.

Fun fact: tires for BelAZ 75710 are produced at a plant in Belarus and weigh 5.5 tons each. Their installation takes 4–5 hours using a special crane. And the mileage of one tire before replacement is only 5–7 thousand kilometers (but in a career this is 1–2 years of work).

How much does it cost to “change the shoes” of a mining dump truck?

Set of 6 tires for Caterpillar 797F costs $300,000–$400,000. In this case, replacement takes up to 12 hours and requires a team of 5–7 people. The price includes not only tires, but also metal wheels (weighing 1.5 tons each), as well as balancing work.

5. How to convert an ordinary car to fit huge wheels: step-by-step instructions

Want to turn your pickup truck into a mini monster track? Technically this is possible, but you will need:

1. Frame reinforcement (welding additional side members or installing a riveted frame from a truck).
2. Replacing bridges to portals (for example, from Dana 60 with gearboxes).
3. Hydraulic suspension installation with a stroke of at least 30 cm.
4. Tire selection: 44-inch ones are a good place to start Mickey Thompson Baja Boss.

The average cost of rework in Russia is from 1.5 to 5 million rubles, depending on the level of training. But keep in mind:

📝 Legality: changes must be made to the PTS (through the examination of the traffic police).

🔧 Transmission Condition: The standard transmission will not withstand the load.

💡 Electrical: New wiring will be required for the powerful headlights and winch.

🚨 Insurance: most insurance companies refuse to insure converted cars.

-->

An example of a successful rework - project "Russian Monster" based on the UAZ-469, which was equipped with 54-inch tires and an engine from GAZ-53. The car participates in Russian trials competitions and even broke the record for overcoming a 2.5-meter-high “wall.”

6. Where to see cars on huge wheels in Russia

If you want to see these giants with your own eyes, here are a few places:

• 🏁 Competitions: Russian Monster Jam (Moscow, St. Petersburg), Extreme Off-Road Show (Kazan).
• 🚜 Exhibitions: Agrosalon (Moscow region), Comtrans (quarry equipment).
• 🎢 Amusement parks: Miracle Island (St. Petersburg) sometimes holds shows with monster tracks.
• 📺 YouTube channels: Off-Road Russia, Monster Track Russia — videos from test drives are regularly posted there.

Ticket prices for the show start from 1,500 rubles, but renting a tractor with huge wheels for agricultural work will cost 10,000–20,000 rubles per day (for example, in the Krasnodar Territory or Rostov Region).

If you want to not only watch, but also ride, some clubs offer short races on monster tracks on a closed track. For example, in a park near Moscow Adrenaline Park you can pay for a 5-minute trip for 3,000–5,000 rubles. But be prepared for a lot of shaking - the shock absorbers here are designed for jumps, not comfort!

7. Legal nuances: is it possible to legally drive such cars?

In Russia, the operation of cars with non-standard wheels is strictly regulated:

• 📜 For monster tracks and rock bouncers: Allowed only in closed areas. Driving on the roads is a violation of Art. 12.5 Code of Administrative Offenses ("Driving a vehicle with malfunctions").
• 🚜 For agricultural machinery: A special pass (permission to drive) is required if the wheel diameter exceeds 2 meters.
• 🏗️ For quarry equipment: travel on public roads is prohibited (only on trawls).

To legalize a converted car, you must:

1. Pass technical expertise in an accredited center (cost - from 30,000 rubles).
2. Get conclusion on the possibility of exploitation.
3. Make changes to PTS through the traffic police.

In practice, it is almost impossible to legalize a monster track - inspectors refuse registration due to non-compliance with safety standards. Therefore, most owners design their cars as “sports equipment” or “exhibition pieces.”

⚠️ Attention: If you are stopped by the traffic police in a car with wheels with a diameter of more than 1 meter (for passenger cars), the inspector has the right to remove the license plates and send the car to the impound lot. The fine is up to 5,000 rubles, and returning the car will cost another 3,000–10,000 rubles.

FAQ: Frequently asked questions about cars on huge wheels

Is it possible to put wheels from a tractor on a UAZ?

Technically yes, but this will require a complete redesign of the suspension, axles and steering. The standard UAZ frame is not designed for such loads - it will have to be strengthened. In addition, tractor tires (for example, T-150) have a different type of mounting (not standard PCD), so adapter disks will be required.

A more realistic option is to use 40-44 inch SUV tires (e.g. Nitto Trail Grappler), but they also require suspension lift kits and arch extensions.

How much do monster track tires cost?

The price of a new monster track tire (eg. BKT TR-135 size 66x43.00-25) starts at $2,500 each. A set of 4 tires will cost $10,000–$15,000. Moreover, the service life of such a tire is about 50–100 races (depending on driving style).

Used tires can be found cheaper - from $800, but their condition must be checked for internal damage (cord separation, cracks).

What is the largest car on wheels in the world?

Today it is a mining dump truck BelAZ 75710 with a lifting capacity of 496 tons. Its wheels have a diameter of 4 meters and weigh 5.5 tons each. The length of the car is 20.6 meters, the height is 8.1 meters (like a three-story house!).

Among monster tracks, the record holder is Bigfoot #20 with wheels 3 meters (10 feet) high, created specifically to enter the Guinness Book of Records.

Is it possible to make a monster track from a VAZ-2107?

Theoretically, yes, but it would be extremely unreliable and dangerous. Main problems:

• Weak frame: even with reinforcement, it will not withstand the loads from large wheels.
• Engine: a standard VAZ engine will not support such tires (you need at least a V8).
• Brakes: The factory system cannot cope with the weight of the car.

It's better to start with a more durable donor - e.g. UAZ Patriot or Ford F-150.

Where to buy wheels for a rock bouncer in Russia?

Main suppliers:

• 4x4Shop.ru - tires Mickey Thompson, Nitto, BFGoodrich (up to 44 inches).
• Off-Road Market — specializes in tires for extreme off-road (for example, Interco Super Swamper).
• Avito/Drom — used tires from monster tracks (price from 50,000 rubles per piece).
• Foreign stores: Discount Tire, Tire Rack (delivery takes 1–2 months).

The average cost of a new 40-inch tire is 80,000–150,000 rubles. Before purchasing, check compatibility with your wheels (correct offset and center hole required).