This size is most commonly fitted to older small city cars and classic compact models that run 12-inch wheels. Examples can include the Fiat 126 and some early Suzuki Alto variants, but the safest check is your current tyre sidewall and the vehicle handbook or door-jamb sticker.
Sometimes, but it is not a like-for-like change. The width and sidewall height differ, which can affect rolling circumference, speedometer accuracy, clearance and handling. Only switch if your vehicle manufacturer lists the alternative size as approved, or if a tyre professional confirms it is suitable for your wheels and load requirements.
Choose the exact load index and speed symbol specified by your vehicle manufacturer, as they are part of the required fitment for safety and legality. You can find the correct ratings in the handbook, on the tyre placard, or by matching the markings on your existing tyres if they are the original specification.
Availability varies by brand, but there are often seasonal options alongside standard summer tyres in this size. If you drive year-round and want extra cold-weather traction, filter by season type and check for the 3PMSF marking on winter and some all-season patterns.
Check the size printed on the tyre sidewall, which will show 145/80 R12 along with the load and speed rating. Then cross-check against the vehicle handbook or the tyre information label on the car. If you see a different size on the car, order what is approved for your specific model and wheel fitment rather than relying on guesswork.