Seat Mii Owner's Manual page 209

Tyre code (example)
Make, logotype
Product name
P255 / 55 R 18
109 H
XL
M+S or M/S or 
RADIAL TUBELESS
E4 ...
DOT BT RA TY5 1709
TWI
Wheels and tyres
Meaning
Manufacturer
Name of tyre assigned by manufacturer.
Size:
P Passenger vehicle code.
255 Nominal width between walls, in mm.
55 Height/width ratio in %
R Tyre type (R indicates "radial").
18 Rim diameter in inches
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Load index page 208 and speed rating
Reinforced tyres ("Reinforced").
Winter tyres code (mud and snow tyres).
Radial tyre without inner tube.
E-mark certifying tyre complies with international legislation followed by a number denoting the country granting the au-
thorisation. The authorisation number ( several digits) is shown below.
Tyre identification number (TIN a) , may be only on interior wall of wheel) and date of manufacture:
DOT The tyre complies with the legal requirements of the US Department of Transport, responsible for tyre
safety regulations.
BT Place of manufacture code.
RA Information about manufacturer and tyre size.
TY5 Manufacturer's tyre specifications.
1709 Date of manufacture: Week 17 of 2009.
This identifies the position of the Tread Wear Indicator
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page 208.
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page 202.
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