These flat-jack tyre protection set prevents your tyres from getting square. These so-called square tyres are caused by local pressure of the vehicle weight on a small area of your tyre which is on the ground for a long time during winter storage. Square tyres can spoil your driving pleasure, because of vibrations. Flat-jack lengthens the lifespan of your car tyres by putting them in a cushion which supports the tyre.
Flat-jacks for winter storage of oldtimers, youngtimers, and sportscars are available in 3 measures:
- Small: until tyre width 195 mm
- Medium: until tyre width 255 mm
- Large: until tyre width 345 mm
Example: if your tyres read 195 65 14, then your tyre width is 195 mm and you can use the flat-jack Small.