TITLE 26 - US CODE - PART II - TIRES

26 USC 4071 - Imposition of tax

(a) Imposition and rate of tax 
There is hereby imposed on taxable tires sold by the manufacturer, producer, or importer thereof a tax at the rate of 9.45 cents (4.725 cents in the case of a biasply tire or super single tire) for each 10 pounds so much of the maximum rated load capacity thereof as exceeds 3,500 pounds.
(b) Special rule for manufacturers who sell at retail 
Under regulations prescribed by the Secretary, if the manufacturer, producer, or importer of any tire delivers such tire to a retail store or retail outlet of such manufacturer, producer, or importer, he shall be liable for tax under subsection (a) in respect of such tire in the same manner as if it had been sold at the time it was delivered to such retail store or outlet. This subsection shall not apply to an article in respect to which tax has been imposed by subsection (a). Subsection (a) shall not apply to an article in respect of which tax has been imposed by this subsection.
(c) Tires on imported articles 
For the purposes of subsection (a), if an article imported into the United States is equipped with tires
(1) the importer of the article shall be treated as the importer of the tires with which such article is equipped, and
(2) the sale of the article by the importer thereof shall be treated as the sale of the tires with which such article is equipped.

This subsection shall not apply with respect to the sale of an automobile bus chassis or an automobile bus body.

(d) Termination 
On and after October 1, 2011, the taxes imposed by subsection (a) shall not apply.

26 USC 4072 - Definitions

(a) Taxable tire 
For purposes of this chapter, the term taxable tire means any tire of the type used on highway vehicles if wholly or in part made of rubber and if marked pursuant to Federal regulations for highway use.
(b) Rubber 
For purposes of this chapter, the term rubber includes synthetic and substitute rubber.
(c) Tires of the type used on highway vehicles 
For purposes of this part, the term tires of the type used on highway vehicles means tires of the type used on
(1) motor vehicles which are highway vehicles, or
(2) vehicles of the type used in connection with motor vehicles which are highway vehicles.

Such term shall not include tires of a type used exclusively on vehicles described in section 4053 (8).

(d) Biasply 
For purposes of this part, the term biasply tire means a pneumatic tire on which the ply cords that extend to the beads are laid at alternate angles substantially less than 90 degrees to the centerline of the tread.
(e) Super single tire 
For purposes of this part, the term super single tire means a single tire greater than 13 inches in cross section width designed to replace 2 tires in a dual fitment. Such term shall not include any tire designed for steering.

26 USC 4073 - Exemptions

The tax imposed by section 4071 shall not apply to tires sold for the exclusive use of the Department of Defense or the Coast Guard.