Tyre repairs are covered by a British Standard BSAU159f:1990  which splits repairs into two categories - minor repairs and major repairs. The British Standard also defines limits to the location, size and number of repairs that can be carried out and makes recommendations also on the repair materials to be used.

The recommended interval for wheel alignment is only two to three years. Although, it may become earlier than two years when you install new tyres or hit a pot hole, It can even be a regular thing for sports cars or vehicles with wide tires.