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T |
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Throttle
Body Fuel Injection (TBI) |
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A
fuel-supply system that has taken
the carburetor's place, increasing
vehicle reliability, efficiency
and emissions performance
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Tire
Aspect Ratio |
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A
tire's height relative to its
width |
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Tire
Codes
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Tire
codes decoded P247/92HR38
P simply means this is
a passenger car tire. Other codes
include T (temporary, as in a
spare tire), LT (light truck)
and C (commercial).
247 (the first number)
is the tire's width in millimeters.
92 (the number following
the slash) is a measure of the
tire's profile, expressed as its
series or aspect ratio - the height
of its sidewall relative to its
width, in a percentage.
H means the tire's maximum
speed rating is 130 mph (see the
key below). Though not all tires
have this rating before the R,
it is becoming more common, especially
on "performance" tires.
R means it is a radial
tire, which is most common these
days.
38 (the last number) is
the diameter, in inches, of the
rim on which the tire fits. |
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Tire
Series |
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Expresses
the tire's aspect ratio as a whole
number |
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TLEV
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LEV,
ULEV, SULEV, ZEV |
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Top-Tether
Anchor |
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A
rigid fastener for attaching a
tether from a compatible child-safety
seat |
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Torque
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Measures
of the force exerted by an engine
and its ability to do work |
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Torque
Steer |
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A
condition in which the vehicle
pulls to one side or the other
under acceleration in a front-wheel-drive
vehicle |
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Torsional
Rigidity |
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A
vehicle body's resistance to twisting
forces |
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Traction
Control |
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A
system that helps a vehicle maintain
traction and stay on course during
acceleration |
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Transfer
Case |
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A
gearbox that divides power between
two separate axles in a four-wheel-drive
system and, in some vehicles,
offers an additional, low-gear
setting for offroad use |
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Turbocharger
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A
device driven by exhaust gases
that increases engine power by
pumping air into the combustion
chambers |
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Turn-in
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The
transition between forward motion
and a turn - the nature of which
varies considerably from vehicle
to vehicle when the driver turns
the steering wheel |
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