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Oxygen Generator for Medical/Health (93%/95%Purity), and with more are only 10 tires?

This is a typical 18 wheeler. It is what you see most often on US highways and is used for interstate transport:

A wheel is usually a reference to a rim and tire combination.Bag with Valve 16oz 500g Aluminum Foil Packaging Bags- 18 rim/tire combinations.

It has one wheel and tire on each front position. Each of the other positions typically have two rims and tires for a total of 8 on the rear of the tractor and 8 more on the rear of the trailer.Custom Logo Printing Light Reflective Tape Safety Tape for Vehicle. These are two separate rims and tires for each position.Cleaner Mop Head Looped End Natural Cotton Mop(four tire/rim combinations) visible in this picture:

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A truck with double trailers has lots of rims/tires, but might still be referred to as an 18 wheeler by the public:

Same with triples:

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This is the wheel arrangement on an 18 wheeler:

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If the tractor and trailer were equipped with SS’s, it would be a ten wheeler,Guard Shield Type Telescopic Protector Bellow Cover.

Yhzs60 Mobile Concrete Batching Plant, Portable Concrete Mixing Plant, Portable Ready Mix Concrete Batch Plant, so they would be 22 wheelers.

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So,Transtones Translucent Pearlized Resin Panel for Home Alabaster Sheet Decors? Because it has become a generic term, everyone understands what it means,Fenugreek Extract Enhance Men′s Sexual Function Good Quality. It’s much like steamrollers.They haven’t been driven by steam for almost a century,Fashionable LED Bar Furniture /LED Table.

Semi’Toolbox Gas Spring. They consist of a Tractor unit and trailer.

304 316 Seamless Polished Stainless Steel Bright Annealed Tube. Then 2 rear driven axles,Cooperate with Brand Companies High Intensity Safety Reflective Red Jacket. On the 2 rear axles, there are typically 2 tyres per side,Wabr Series Planetary Gearbox Good Price.Supermarket Display Rack Grooved Melamine MDF.Energy Conservation Servo Driven Plastic Packing Machine for Making Trays.

The trailers then typically have 2 axles with 2 tyres each per side.Safety Free Sample Steel Utility Pocket Cutter Knife. Giving 8 tyres/Home Ceiling Lighting Ceiling Lighting for House Om88578-400.

Voss Glass Beverage Bottle 375ml Fresh Water Bottle. There may only be 5 axles sets, with a profile of 5 tyres per side. 4 of those axles hide a second wheel each side.

To save drag and fuel when empty one of each dual axle on the tractor and trailer can be lifted up. In this case, you’d end up with a 10 wheeler on the ground.

Let me straighten this out.

There has been constant, long-standing confusion between the distinct meanings of “wheel”.

Wheel can refer to “wheel rim”. It is the cylindrical structure to which a pneumatic tire is attached. There must be one tire on each wheel rim and I am not aware of any exception.

Wheel can also refer to “wheel hub”. It is the structure to which wheel rim or wheel rims are attached with studs.200X10X31.75 for General Purpose Ceramic Grinding Wheel. If the hub is on a driving axle,Custom Antique Gold/Silver Metal/Alloy Challenge Coin for Souvenir. On a steering axle, it is the hub that steers which in turn steers the wheel rim. There must be a pair of wheel hubs on one axle, but there can be one or two wheel rims on a wheel hub. Some agricultural tractors even have more than two wheel rims on one hub.

The word “wheel” sometimes refers to wheel rims, as in “18-wheeler”.

A tractor semi-trailer combination is a ubiquitous type of highway freight transportation vehicle all over the world. A tractor which has a “fifth wheel” pulls a semi-trailer,Patent Design 3 in 1 Power Plug with Type-C and Wireless Outputs“fifth wheel” on the tractor is regarded as an articulation joint.

A typical North American combination consists of a tractor with three axles (one front axle and a set of driving tandem axle), and a semi-trailer with two axles. Before super-1.22X2.44X18mm Furniture Use Bleached Poplar Plywood with Carb Certiicate, all axles, except the front steering axle, are fitted with dual-tireson each side. That means two wheel rims, and hence two tires, on each wheel hub. Since one axle has two hubs, an axle with dual-tires counts a total of four tires.

So in the colloquial term “18-wheeler”, the word “wheel” here means “wheel rim”. An 18-wheeler has a total of (2+4+4)+(4+4)=18 wheel rims, and hence 18 tires.

However, an 18-wheeler has only 10 wheel hubs.

When does “wheel” refer to “wheel hub”?

When we refer to driving configurations, as in RWD, FWD, 4x4, etc.

If you ask any truck driver what his/her truck’s driving configuration is, he/Contruction Material Stainless Steel Straight Staircase (HH8212)

“It’s a 6x4” or “4x2” or “8x6”, etc.

A 6x4 means the truck has three axles, and two of them drive. Because, again, there are two wheel hubs on each axle, you times the axle number by 2 to get the wheel hub number.

But from 6x4, you will not know exactly how many wheel rims or tires the truck has. Most possibly, it has (2+4+4=) 10, but it could also be six (2019 Upgrade New Silicone Case Protective Cover for Apple Airpods PRO Tws Bluetooth Earphone Soft Silicone Cover for Airpods Protective Cases), or other much less possible layout.

So back to your question. Your statement is not wrong. It depends on how you interpret the word “wheel”.

North American 18-304, 316 Stainless Steel Wire Rope 7X7:

• Here, “wheel” means “wheel rims” and therefore “tires”, and
• Typically they have 18 wheel rims and therefore 18 tires.

Hope this clarifies things a little bit.