This size is typically fitted to older, lighter city cars and entry-level superminis. Common examples include the Nissan Micra K11, classic Fiat Panda and some Suzuki Alto models. Always confirm the size and the full marking (including load index and speed rating) on your current tyre sidewall or in the vehicle handbook before ordering.
Match the load index and speed rating shown on your existing tyres or listed by the manufacturer. For this size, 75T and 79T are common, but your car may specify something different. You can choose a higher load index or speed rating than required, but do not choose a lower rating.
145 R13 is an older format and is often treated as roughly equivalent to an 80 series profile, but it is not guaranteed. The safest approach is to fit exactly what is printed on the sidewall or specified by the handbook, so the overall diameter and handling remain as intended.
It is possible on some cars, but it is not a like-for-like swap. 155/70 R13 is slightly smaller in overall diameter, which can affect speedometer reading, ride comfort and clearance. Only change size if your handbook lists it as an approved alternative, and keep both tyres on an axle the same size and pattern type.
Yes, but the choice can be more limited than common modern sizes, so it helps to filter by season and check availability. Winter tyres will usually carry the 3PMSF marking for cold-weather performance, while all-season tyres are designed for year-round use in typical UK conditions. Pick the season that matches where and when you drive, then order a matching pair or set for consistent grip.