Compare Construction Methods:
|Live rubber is infused directly to the casing creating the strongest bond possible.||Precured rubber is glued to the tire casing by a thin piece of cushion gum.|
|No splices means a perfect tread around the entire circumference||Precured rubber ends are glued together by a process called stitching. The splice endpoints do not match causing a misalignment in the tread design.|
|Rubber is applied evenly around the entire circumference||When precured rubber is applied it can be too short or long for the application. Due to this the rubber will either be stretched or forced into position. This creates heavy or light spots which cause heat and tread wave.|
|No heat is applied to the sidewall during the curing process.||High heat to the sidewall during the curing process.|
|Match-mated tires every time.||Mismatched tire on same axle, because, no two casings are exactly alike.|
TIRE COSTS COMPARISON
PRECURE SYSTEM 1
PRECURE SYSTEM 2
|Tread Rubber (28 lbs.)||$30.38||$72.91||$44.84|
|3% Scrap Factor||$0.91||$2.48||$1.53|
|Total Cost Per Tire||$66.29||$119.99||$87.52|
|Exceeds Hawkinson by
Hawkinson is (x) % less
|Based on Costs as of 1/15/08|
COMPARE TREAD TEMPERATURES:
As these test results prove, the exclusive patented Hawkinson “Rolling Radius” curing method does not apply heat to sidewalls or bead area. So buckling, crunching, overheating of tire casings during the curing process is eliminated.
HAWKINSON MOLD (Mold Cure)
- 11-22 5 bias ply with highway design
- Tread depth: 16/32″
- tread rubber gauge:18/32
BANDAG CHAMBER (Precure)
- 11-22.5 bias ply with # 7 highway design
- Tread depth: 17/32″ total gauge from tread
- Surface to buff line: 20/32
TEST PARAMETERS (Thermocouple Wire Locations) Buff line at shoulder, bead equidistant between toe and heal, inside casing at tread centerline, tread surface at centerline. Hawkinson Treads are scientifically applied to run cooler, smoother and quieter. Temperature readings by Thermo-Electric Digimite. Tests conducted by Retreading Consultant Services, Louisville, Kentucky. Complete test results available from Hawkinson Companies.
Research Proves Hawkinson’s Right
Dynamometer tests show why the Hawkinson method of tire treading is better than conventional precure retread methods.
The picture below shows that a Hawkinson Seamless treaded tire has no tread waves while rolling on the dynamometer at a speed equivalent to 90 MPH under load. The absence of tread waves, even at this high rate of speed, is positive proof that Hawkinson Treads provide a cooler running, longer wearing tire.
The picture below shows a conventional precure retreaded tire, with a normal load, running at an average rate of speed. The wave/flexing action of the tire generates excessive carcass and tread heat.