Tire Markings - Tesla Roadster 2 Owner's Manual

Wheels and tires

Tire markings

1, Tire width
7
This three digit number gives the width in
millimeters of the tire from sidewall edge to
6
sidewall edge.
5
2, Aspect ratio
4
3
This two digit number, known as the aspect
2
ratio or profile, gives the sidewall height as a
percentage of the tread width. So, if the tread
1
width is 205 mm, and the aspect ratio is 50,
the sidewall height will be 102 mm.
3, Tire construction
R indicates that the tire is of Radial ply
12
construction.
4, Wheel diameter
This two digit number is the diameter of the
wheel rim in inches.
5, Load index
8
This two or three digit number is the tire's load
index. It is a measurement of how much
9
weight each tire can support. This number is
not always shown.
6, Speed rating
10
The speed rating, when stated, denotes the
maximum speed at which the tire should be
11
used for extended periods. The ratings range
from 99 mph to 186 mph. These ratings are
listed in the following table.
TR0057
Technical specifications 10-5