175/65R14 tire size — dimensions and nearest alternatives

Nothing else on this site is this small. 175/65R14 stands 22.96 in tall on a 6.89 in section, which puts it a full inch and a quarter below the shortest 15-inch fitment in the catalogue. It is the size of the small European and Japanese city car — Aygo, C1, 108, Panda, i10, base-trim Yaris and Jazz — and it is the only 14-inch entry here because 14-inch wheels have effectively disappeared from everything larger.

What being small does to the numbers

At 72.1 in of circumference, this size completes 878.5 revolutions for every mile covered. That is the highest figure in the catalogue by a clear margin, and it follows directly from the diameter: revolutions per mile is 63,360 divided by the circumference, so a small tire is a busy one.

The sidewall is 4.48 in — 65% of 175 mm — which is a very high proportion of a tire that measures only 6.89 in across the section. The casing is nearly as deep as it is wide. Rounded to the nearest half inch, the granularity people actually speak in, this is a 23-inch tire.

The nearest sizes, all of them larger

Size	Wheel	Diameter	Taller by
195/60R15	15 in	24.21 in	1.26 in
195/55R16	16 in	24.44 in	1.49 in
185/65R15	15 in	24.47 in	1.51 in
215/45R17	17 in	24.62 in	1.66 in

There is no near-neighbour. The closest thing in the catalogue is 5.47% away, and every alternative requires a larger wheel as well as a taller tire. A vehicle fitted with 175/65R14 and moved to 195/60R15 would read 70 mph on the instruments while travelling at 73.8 mph.

A narrow band of load indexes

City cars weigh very little, so this size is stocked across a much narrower range of load ratings than a truck size would be. That does not make the figure printed after the code irrelevant — it still has to clear whatever the door-jamb placard states — but it does mean the choice is rarely between casings of different capacity. The load index table turns an index into pounds and kilograms.