Aston Martin DB11 Owner's Handbook Manual page 223

[6] TIRE IDENTIFICATION NUMBER (TIN): (Also known as
'DOT Code') The Tire Identification Number (TIN) begins with
the letters 'DOT' and shows that the tire meets all federal
standards. The next two numbers or letters are the plant code
designating where it was manufactured, the next two are the tire
size code and the last four numbers represent the week and year
the tire was built. For example, the numbers 317 mean the 31st
week of 1997. After 2000 the numbers go to four digits. For
example, 2501 means the 25th week of 2001. The numbers in
between are identification codes used for traceability. This
information is used to contact customers if a tire defect requires
a recall.
[7] 95: The tire's load index. It is an index that relates to how
much weight a tire can carry.
You may not find this information on all tires because it is not
required by federal law.
[8] H: The tire's speed rating. The speed rating denotes the
speed at which a tire is designed to be driven for extended
periods of time under a standard condition of load and inflation
pressure. The tires on your vehicle may operate at different
conditions for load and inflation pressure. These speed ratings
may need to be adjusted for the difference in conditions. The
ratings range from 81-186 mph. These ratings are listed in the
following chart.
Letter Rating
M
N
Q
R
S
T
U
H
V
W
Y
For tires with a maximum speed capability over 149 mph, tire
manufacturers sometimes use the letters ZR. For those with a
maximum speed capability over 186 mph, tire manufacturers
always use the letters ZR.
Speed Rating
81 mph
87 mph
99 mph
106 mph
112 mph
118 mph
124 mph
130 mph
149 mph
168 mph
186 mph
Maintenance and Technical Data
12.21