"Stud" as used herein is a pin-type device prepared for
installation in the tread design of an automobile tire. It consists of a
tungsten carbide core bonded to an outer casing or shell of plastic, aluminum
or steel.
"Stud tire" is an automobile tire fitted with studs in the
tread design in openings molded for that purpose by the tire manufacturer.
"Body of a tire" is the fabric or cord material to which the
rubber tread material is bonded.
"Manufacturer" shall be the person or corporation who makes or
fabricates the body of a tire.
(A)
The manufacturer or retreader shall prepare precise specifications for new stud
tires and newly retreaded tires covering the number, pattern of installation,
type of stud to be used and number of studs to be used in each type of tire for
which approval is applied.
(B)
Approval may be granted for installation of studs in standard tires and in
newly retread tires for which precise specifications are submitted.
(C) When installed, there shall be a minimum
of 2/32 inch of rubber between the base of the stud and the cord body of the
tire.
(D) When installed, the
tungsten tip of the stud shall project not less than .040 inch nor more than
.090 inch above the tread surface of the tire. The measurements that are made
to see that this is complied with will be made on tires before they have been
in use. However, if there is any question as to their requirements, they will
be again measured, after the tires have been driven at speeds not to exceed 50
miles per hour for a distance of at least 10 miles.
(E) The number of studs per tire shall be
controlled by the size of the passenger car tire and shall be within a range of
a minimum of 60 and a maximum of 150 for the small, standard size and/or larger
passenger car tire.
(F) The rubber
surrounding the stud itself where the stud insertion is made must be a minimum
of .500 inch in diameter and must be of solid rubber with the stud in the
center of this solid rubber area.
(G) Studs must be imbedded in holes premolded
in tires.
(H) Studs when inserted,
shall be firmly and squarely seated in these holes and in the tire itself.
(I) The studs may not exceed .400
inch diameter inclusive of the stud casing.
(J) Studs may be used in tires on single tire
passenger vehicles and other single passenger vehicles with rated capacities up
to and including 3/4 ton.
(K) No
stud tire shall be used on a public highway earlier than November 1st or later
than April 15 of any winter season.
(L) The tire or rubber manufacturer shall be
responsible for the proper installation of studs in all tires where the studs
are inserted by the factory and those tires where studs are inserted by the
dealers who operate factory-owned stores. Those companies or tire dealers doing
retread operations shall be responsible for the proper installation of studs in
any retread tires that they manufacture and shall further be responsible for
any insertion of studs that these same companies or dealers insert in new tires
in which they apply the studs.
A manufacturer of a stud tire or the retreader seeking such
approval of his tire for legal sale and/or use in Kansas shall apply by letter
to the traffic and safety department of the state highway commission, state
office building, Topeka, Kansas, stating that his product meets all the
requirements for stud tires as herein contained, and as required by the state
highway commission of Kansas. The commission reserves the right to require
additional proof of tire or stud conformity with such requirements.
A provisional certificate of approval may be issued for each
type tire by the state highway commission providing that:
(1) The manufacturer and/or retreader
applies, submitting all required information for each type tire, and therefore
certifying that his product conforms with all of the Kansas requirements.
(2) The commission reserves the
right to require the submission of one or more pairs of each size tire for
which approval is requested as the commission may designate.
(3) The commission reserves the right to deny
a certificate of approval for any type of stud tire that does not meet its
standards and recommendations.
