WHEELS & TIRES. What Tires Are Made Of… l Raw Rubber l Steel l Nylon l Polyester l Rayon l Carbon...
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Transcript of WHEELS & TIRES. What Tires Are Made Of… l Raw Rubber l Steel l Nylon l Polyester l Rayon l Carbon...
What Tires Are Made Of…What Tires Are Made Of…
Raw Rubber Steel Nylon Polyester Rayon
Carbon Black Synthetic
Rubber Fiberglass Aramid Brass
What Is Pneumatic Tire?What Is Pneumatic Tire?
One that is filled with compressed air
All tires manufactured today are considered Pneumatic tires.
First device to damped road shock
Who Invented The First Who Invented The First Pneumatic Tire?Pneumatic Tire?
John Dunlop in 1887 1890 he began the
Dunlop Rubber Co in Dublin Ireland
Why are Tires Black?Why are Tires Black?
To protect the rubber from the harmful UV rays.
A common type of UV stabilizer called a competitive absorber is added to capture and absorb these harmful UV light wave energy.
To protect the rubber from the harmful UV rays.
A common type of UV stabilizer called a competitive absorber is added to capture and absorb these harmful UV light wave energy.
Bias Ply TireBias Ply TireBias Ply TireBias Ply Tire
The cord angle is also reversed from ply to ply.
Tread is bonded directly to the top ply.
A bias ply tire has plies running at an angle from bead to bead.
Belted Bias TireBelted Bias Tire Is a bias tire with
belts added to increase tread stiffness.
These belts are also ran at a different angle.
These belts only lie on the tread area and not on the side walls, like cords.
Radial Ply TireRadial Ply Tire Has plies running
straight across from bead to bead with stabilizer belts lying directly beneath the tread.
This results in the radial having flexible side wall, but a stiff tread.
Load IndexLoad IndexP195/60R15 87S - The load index (87) is the tire size's assigned numerical value used to compare relative load carrying capabilities. In the case of our example the 87 identifies the tires ability to carry approximately 1,201 pounds.The higher the tire's load index number, the greater its load carrying capacity.89 = 1,279 pounds88 = 1,235 pounds87 = 1,201 pounds86 = 1,168 pounds85 = 1,135 pounds
Speed RatingSpeed Rating
Rating Maximum Speed Q 99 mph S 112 mph T 118 mph U 124 mph H 130 mph V 149 mph W 168 mph Y 186 mph Z Above 149 mph
TIRE GRADINGTread Wear – Tire life expectations
– 100 is base line, 150 is 50% better
Traction Rating – Braking capabilities
– A, B, C designationsTemp. Rating – Ability to withstand extreme heat
– A, B, C designations
Tire PressureTire Pressure Should be check monthly Should be checked cold For every 10° Fahrenheit change in air
temperature, your tire's inflation pressure will change by about 1 psi
The EPA says your mileage drops 1% for every 2 pounds under the recommended tire pressure.
Tire Pressure PlacardTire Pressure Placard Use the tire pressure recommended in your vehicle's
owner's manual or tire information placard
Effects of Mismatched TiresEffects of Mismatched Tires
Different Manufactures Different sizes New and/or used tires Effects on speedometer Effects on ABS/Traction Control Systems Effects on vehicle handling
Tire PullTire Pull Defective/damaged tires Bent wheel (rim) Excessive shoulder wear Excessive feathering
Tire Pressure MonitoringTire Pressure Monitoring Warns of significant lose of tire pressure First used on 1994 Corvette All cars & LD Trucks must have TP system by
2008 Two types: Direct and Indirect
Direct TP Warning SystemDirect TP Warning System Computer controlled (BCM) w/ radio
transmitters in wheels (pressure sensors) Transmits actual TP of each tire Displays on IPC Diagnostic capabilities
Indirect TP Warning SystemIndirect TP Warning System ABS based system, using existing ABS hardware, w/
software mods Changes in TP affect tire circumference, affecting tire
speed Sensors monitor each wheels speed, compairs to one
another Approx. 7 psi difference to trigger warning
Run Flat TiresRun Flat Tires Temp. supports
weight of vehicle with no air pressure
Internal support, thicker side walls, stronger beads.
Can maintain Mobility for 50 miles up to 55 mph