Commercial Truck Tires
Commercial truck tires can be confusing, especially figuring out
depreciation and long term value of high quality tires verse cheaper rubber.
Although dual tires are most common for most commercial truck tires, use
of a single, wider tire on each axle is becoming popular, particularly
among bulk cargo carriers and other freight operators. In Europe this
is done in a few countries as well.
There are many advantages to this configuration and they are: lighter
weight allows a truck to haul more weight of freight, and the single wheel
covers less of the brake unit, which lets the brakes cool easier and faster.
This is much safer and becomes yet another difficult to quantify element
of value. However, there is one huge disadvantage. The single tire cannot
be driven on after a deflation or after it runs flat. It is not possible
to drive the commercial truck to a service location without risking damage
to the rim, as it is with dual wheels.
That's why it will probably never become the norm here in the United
States where tire repair is preferably done at a service station qualified
to handle tractor trailer tires.
Commercial truck tires are usually set with 3 axles, the front axle having
two wheels, and each of the two rear axles having a pair of "dual"
tires on each side. The most commonly set commercial truck has 10 tires.
The cargo trailer usually has two axles at the rear, each of which have
dual wheels, there are usually 8 wheels on the commercial trucks trailer.
Remember this configuration when searching for commercial truck tires.
The United States also allows 2-axle commercial trucks to tow two 1-axle
28-foot commercial-trucks known as a set, doubles or a set of joints.
Some places also allow towing up to three 28-foot trailers known as road
trains or triples. A 2-axle full-sized semi truck pulling a 28-foot trailer
is also permitted in some regions.
Not a lot of states allow dual full-sized commercial truck trailers.
Reasons for limiting the legal trailer configurations include both safety
concerns and the impracticality of designing and constructing roads that
can handle the larger wheelbase of these vehicles and the larger minimum
turning range associated with them. Remember to note all of this when
trying to find and buy commercial truck tires.
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