FEATURE Most Police Tires Are Fixed Wrong
The puncture is not the problem. The real problem is how much hidden, internal damage was done to the sidewall and belts when the steel wheel pinched the fl attened tire to the pavement.
Paschen, Store Manager at McCord Goodyear in Lafayette, Ind.
The Right Way
Goodyear’s Police Tires web link and Fires- tone’s Tire Safety web link both spell out the
“Is the sidewall OK?” is a better question than “Does the repaired tire hold air?” No on-rim fi xes should be permitted.
same, proper procedure for the repair of speed- rated tires. T is is a long and detailed repair pro- cedure, complete with step-by-step directions. It calls for specifi c cure times and mandates that the tire was repaired from the inside, the surface was properly roughened, the puncture and side-
wall was competently visually inspected from the inside. Of course, the puncture must be confi ned to the tread area only. Unbelievably, repairs to punctures in the shoulder block of the tread and even the sidewall are still performed by some shops.
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http://info.hotims.com/52497-26 60 Police Fleet Manager Mar-Apr 2014
Restrictions on the number and on the size of the repairs must be followed. On H-rated and V-rated tires used by law enforcement, the tires may be repaired a maximum of one time and the maximum repair diameter is ¼ inch. T e tire must still have at least 2/32-inch tread depth for a repair to be performed. T e tire must be removed from the rim. No on-rim fi xes are permitted. After the removal of the object, inspect the inside of the tire for cracks, belt separation, or fabric splitting. T is is more than just an inspection to be sure the puncture object has been fully removed from the tire. It is a check to see that the inner sur- face of the sidewall has not been scuff ed and abraded too much for the tire to be used, even if the leak is properly fi xed. Use a pre-buff cleaner around the puncture, then a 7/32-inch carbide cutter (for ¼-inch re- pairs) to clean out the puncture. Always drill from the inside of the tire to the outside follow- ing the direction of the puncture. Buff the liner and the plug.
Coat the tire inner liner, the plug, the patch (or the one-piece plug-patch) with chemical vulcanizing cement, and allow the cement to dry. Install the plug and then the patch, or the one-piece plug-patch. Install the separate patch, or the plug-patch combo, with the tire bead in the relaxed (non-spread) position. If a plug is to be used (as opposed to a plug-patch
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