Metric tire size

185/65R14 tire size

A 185/65R14 tire is 23.5 inches (596 mm) tall and 7.3 in wide, for a 14-inch wheel, with a 4.7 in sidewall. That is the nominal size worked out from the code. Makers publish 23.3–23.5 in for real 185/65R14 tires (4 makers).

Diameter23.5 in596 mm

Width7.3 in185 mm

Sidewall4.7 in120 mm

Revs per mile859nominal, published 885–898

Wheel width5–6.5 inapproved by every listing

Compare 185/65R14 with other sizes

Your current size

Current tire size

e.g. 265/70R17, 2657017 or 33x12.50R20

Where do I find my size?

It's on the tire sidewall, e.g. P265/70R17 115T, and on the tire placard sticker on the driver's door jamb (also in the owner's manual). If your current tires aren't the original size, the placard shows what the vehicle came with. Digits are enough here: 2657017 or 33125020.

Size you're considering

Size you're considering (2)

Real 185/65R14 tires: published diameters

Figures from the makers' own data books. They differ from the 23.5 in calculated figure because each tread design and construction measures slightly differently.

Maker (data book)	Published diameter	Revs per mile	Approved wheel width	Listings
Falken	23.5 in	898	5–6.5 in	2
Goodyear	23.5 in	889	5–6.5 in	1
Hankook	23.3 in	891	5–6.5 in	1
Toyo	23.5 in	885	5–6.5 in	1

Sources: maker data books (PDF), checked 2026-11-05. Brand names identify the data source only.

Equivalent sizes on other wheels

Sizes that appear in the maker data books with a diameter within 3% of 185/65R14. Same diameter is only one part of fitting a different size.

Wheel	Real sizes within 3% (closest first)
15-inch	195/55R15 (23.4 in, −0.1%), 185/60R15 (23.7 in, +1.2%), 225/50R15 (23.9 in, +1.7%)
16-inch	215/45R16 (23.6 in, +0.6%), 185/50R16 (23.3 in, −0.8%), 205/45R16 (23.3 in, −0.9%)
17-inch	205/40R17 (23.5 in, −0.1%), 245/35R17 (23.8 in, +1.2%), 215/40R17 (23.8 in, +1.3%)
18-inch	235/30R18 (23.6 in, +0.4%), 205/35R18 (23.6 in, +0.8%), 215/35R18 (23.9 in, +1.9%)

Popular comparisons with 185/65R14

175/70R14 vs 185/65R14−0.7% diameter 185/65R14 vs 185/70R14+3.1% diameter 185/60R14 vs 185/65R14+3.2% diameter 185/65R14 vs 175/65R14−2.2% diameter

FAQ

How tall is a 185/65R14 tire?

23.5 inches (596 mm) calculated from the size code. Makers publish 23.3–23.5 in for real tires in this size; the difference comes from tread design and construction.

How do you work out the 185/65R14 diameter?

Sidewall = 185 mm × 65% = 120.2 mm. Diameter = 14 in wheel + 2 × 120.2 mm ÷ 25.4 = 23.47 in.

Is 185/65R14 a 23-inch tire?

It is about 23.5 in tall nominally, so it is close to 23 inches. Real tires in a size vary slightly by model; check the maker's spec sheet for the exact tire.

What sizes are equivalent to 185/65R14?

Real sizes within 3% of its diameter include 215/45R16 (+0.6%), 205/40R17 (−0.1%) and 235/30R18 (+0.4%). Equal diameter alone doesn't make a size suitable: wheel width, offset, clearance and load rating all matter.

How many revolutions per mile does a 185/65R14 make?

About 859 calculated from its unloaded diameter. Makers publish 885–898 revs per mile, measured under load (a loaded tire rolls on a slightly smaller radius), which is why published figures are higher.

Open 185/65R14 in the converter · Tire size chart

Important: These are calculated (nominal) dimensions, not a fitment recommendation. Real tires of the same size differ by brand and model (makers allow about ±3% of section height), and width changes with the rim it is mounted on. The math can't see wheel width and offset, clearance at full steering lock and suspension travel, load index, speed rating, or what your vehicle maker approves. Before changing size, check your door-jamb placard and owner's manual and ask a tire professional. A replacement tire must meet or exceed the load index and speed rating on the placard.