Wheels and Tires
1
Tire category. P indicates that the tire is for passenger vehicles.
2
Tire width. This 3-digit number is the width (in millimeters) of the tire from sidewall
edge to sidewall edge.
3
Aspect ratio. This 2-digit number is the sidewall height as a percentage of the tread
width. So, if the tread width is 205 mm, and the aspect ratio is 50, the sidewall height is
102
mm.
4
5
6
Tire construction. R indicates that the tire is of Radial ply construction.
Wheel diameter. This 2-digit number is the diameter of the wheel rim in inches.
Load index. This 2 or 3-digit number is the weight each tire can support. This number is
not always shown.
7
Speed rating. When stated, indicates the maximum speed (in mph) at which the tire
can be used for extended periods. Q=99 mph (160 km/h), R=106 mph (170 km/h),
S=112 mph (180 km/h), T=118 mph (190 km/h), U=124 mph (200 km/h), H=130 mph
(210
km/h), V=149 mph (240 km/h), W=168 mph (270 km/h), Y=186 mph (300 km/h).
8
Tire composition and materials. The number of plies in both the tread area and the
sidewall area indicates how many layers of rubber coated material make up the
structure of the tire. Information is also provided on the type of materials used.
9
Maximum tire load. The maximum load which can be carried by the tire.
10
Maximum permissibleinflation pressure. This pressure should not be used for normal
driving.
11
U.S. DOT TireIdentification Number (TIN). Begins with the letters DOT and indicates
that the tire meets all federal standards. The next 2 digits/letters represent the plant
code where it was manufactured, and the last 4 digits represent the week and year of
manufacture. For example, the number 1712 is used to represent the 17th week of 2012.
The other numbers are marketing codes used at the manufacturer’s discretion. This
information can be used to contact consumers if a tire defect requires a recall.
12
13
14
Treadwear grade. This number indicates the tire’s wear rate. The higher the treadwear
number is, the longer it should take for the tread to wear down. A tire rated at 400, for
example, lasts twice as long as a tire rated at 200.
Traction grade. Indicates a tire’s ability to stop on wet roads. A higher graded tire
should allow you to stop your vehicle in a shorter distance than a tire with a lower
grade. Traction is graded from highest to lowest as AA, A, B, and C.
Temperature grade. The tire’s resistance to heat is grade A, B, or C, with A indicating
the greatest resistance. This grading is provided for a correctlyinflated tire, which is
being used within its speed and loading limits.
162
Model X Owner's Manual
| Categories | Tesla, Tesla Model X |
|---|---|
| Download File |
|
| Document Type | Owners Manual |
| Language | English |
| Product Brand | Tesla, Model X |
| Document File Type | |
| Copyright | Attribution Non-commercial |
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