Skoda Roomster Owner's Manual page 167

Fitting winter tyres will significantly improve the handling of your vehicle when
driving in wintry road conditions.
To get best possible handling, winter tyres must be fitted to all four wheels.
The minimum tread depth must be 4 mm.
Winter tyres (marked with M+S and a peak/snowflake symbol) of a lower speed
category can be used provided that the permissible maximum speed of these
tyres is not exceeded even if the possible maximum speed of the vehicle is
higher.
Only use those tyres or wheel rims which have been approved by ŠKODA for
your model of vehicle.
The speed limit for winter tyres can be set in the MAXI DOT display in the Win-
ter tyres menu item » page 38.
For the sake of the environment
Re-fit the summer tyres at an appropriate time as they provide better handling
properties, a shorter braking distance, less tyre noise, and reduced tyre wear
on roads which are free of snow and ice as well as at temperatures above 7 °C.
The fuel consumption is also lower.
Snow chains
When driving in wintry road conditions, snow chains improve not only traction,
but also the braking performance.
Snow chains must only be mounted on the front wheels.
For technical reasons, it is only permissible to fit snow chains with the follow-
ing wheel/tyre combinations.
Wheel size
5J x 14
6J x 14
6J x 15
Remove the full wheel trims before installing the snow chains
Only fit snow chains with links and locks not larger than 12 mm.
The chains are to be removed when driving on snow-free paths. They would
otherwise cause loss of performance and damage the tyres.
164
General Maintenance
Depth D Tyre size
35 mm 175/70 R14
37 mm 185/65 R14
43 mm 185/55 R15
» page 159.