They are very close, but not always identical. 175 R13 is an older marking that usually implies an aspect ratio of around 80-82, so 175/80 R13 is commonly used as the modern equivalent. Before buying, confirm the approved size in your handbook or on the vehicle tyre placard, as small differences can affect clearance and speedometer accuracy.
Match the load index and speed rating shown on your current tyre sidewall or the vehicle placard, and never choose a lower rating than specified. In this size you will see different ratings depending on whether it is intended for a car or a light van application, so check carefully at checkout. If you are replacing tyres on the same axle, keep the ratings consistent across that axle.
It should fit many 13-inch wheels, but rim width still matters. Check the wheel specification (often stamped on the rim, for example 5Jx13) and confirm it is within the tyre manufacturer’s approved rim-width range for 175/80 R13. If the rim is too narrow or too wide, it can affect stability, wear and the way the sidewall supports the tyre.
It is possible on some vehicles, but it is not an automatic swap. The tyre becomes 10 mm wider, which can reduce clearance to suspension parts or wheel arches, and the rolling diameter can change slightly depending on the original size. Check the manufacturer-approved sizes first, and if in doubt, confirm with a fitter before ordering.
Yes, but the choice can be more limited than common modern sizes, so it helps to compare availability early. For winter tyres, look for the 3PMSF symbol for verified snow performance, and for all-season tyres consider whether you want year-round convenience over maximum summer handling. When comparing options, use wet-grip and noise ratings to narrow down a shortlist that suits your driving.