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i would suppose its because the weight in which they carry must be distributed on 18 wheels instead of 4, 4 wheels would not work
Each wheel has a specific load rating as does the axle. The more tires you have hitting the road at a given time helps to reduce the stress on the truck/trailer and the road. The more wheels a vehical has, the higher (in most cases) the gvwr of the vehical is.
What else can I help you with?
What is the name of vehicle that has 18 wheels?
A vehicle with 18 wheels is commonly known as a "semi-truck" or "tractor-trailer."
How many wheels dose a semi truck have?
18, The truck has 10, the trailer has 8, = 18.
18 equals W on a S T?
18 = Wheels on a Semi Truck
How many wheels are on a semi-truck?
They differ , but the answer your lookong for is 18.
What kind of vehicle is usually referred to as an 18 wheeler?
An 18 wheeler is a semi-truck and trailer. A truck, and trailer, has 18 wheels, including 10 on the semi, and 8 more on the trailer. 18 Wheelers are responsible for the majority of products the user buys everyday.
Do monster trucks have big wheels?
yes they do there bigger then semi truck wheels also the mall truck has the biggest wheels
How many wheels does a trailer typically have?
A semi-trailer truck usually has eighteen wheels. For this reason, many people call semitrailers "18-wheelers". They're also known as "mack trucks", "tractor-trailers", and "big rigs".
What are the ratings and certificates for Hard Truck 18 Wheels of Steel - 2002 VG?
Hard Truck 18 Wheels of Steel - 2002 VG is rated/received certificates of: USA:E
How many tons will a Mac truck carry?
The amount of tons a Mac truck can carry will depend on the size of the truck. A six wheel Mac truck with a dump can carry up to 30 tons or more. A Mac truck with 18 wheels and a semi trailer can carry up to 23 tons in the trailer.
What is another name for a tractor trailer?
semi truck, or semi tractor trailer, and 18 wheeler.
Why is a 18 wheel truck called a semi?
Because the truck alone is only half the unit, not complete with the trailer. Also, because it is based on the type of trailer. A "full" trailer has wheels at the front as well as at the rear. A "simi-trailer" only has wheels at the rear, and its front end is supported by the towing vehicle.
How is a trailer different from a semi-trailer?
Trailer is way more bigger than a semi-trailer. Common misconception between a trailer and a semi-trailer. Technically, a trailer has wheels in front and rear and is hitched to a pulling vehicle (car,truck,etc.) A semi- trailer only has wheels in the rear and is hitched to a pulling vehicle (car,truck,etc.)
