Tire Dimension Explanation

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Tires	Speed	1	2	3	4	5	6	7
Summer tires	up to 240 km/h	195	65	R	15	91	V	-
Winter tires	Up to 160 km/h	195	65	R	15	91	Q	M + S
Winter tires	Up to 190 km/h	195	65	R	15	91	T	M + S
High speed tires	Over 240 km/h	225	50	ZR	16	91	-	-

Tire width
Aspect ratio in %
Tire construction code "R" (means radial)
Rim diameter designation
Load index (LI)
Speed Rating
Winter tire/designation for all-season tire

NOTE:

A designation required by Audi may also be on the sidewall, such as "R01" and/or "AO". These are approved by Audi and are specially designed for specific Audi models.

The designation "R01" can vary depending on the model from "R02 or R0...".

NOTE:

Based on the EU guideline ECE- R117, tires that fulfill the new driving noise limits also have an "S" designation for Sound on the sidewall.

For passenger vehicle tires with a cross section up to 185 mm: from 10/01/2009

For passenger vehicle tires with a cross section from 185 mm to 215 mm: from 10/01/2010

For passenger vehicle tires with a cross section over 215 mm: from 10/01/2011

Run-flat tires, SST (Self Supporting Tire) and PAX have a special designation on the tire sidewall depending on the manufacturer.

CAUTION:

It is mandatory for run-flat tires to have a tire pressure monitoring system in the vehicle. Refer to TIRE PRESSURE MONITORING SYSTEM .