TreadSize

Decoded sidewall size

185/75R14 tire size

185/75R14 in inches: 24.93" overall diameter — 7.28" wide, 5.46" sidewall.

Methodology: dimensions are calculated from standard ETRTO tire-size formulas. Last reviewed June 2026 by the TreadSize editorial team.

185/75R14 tire detail photo with TreadSize diameter, width, and rim measurement card
Overall diameter 24.93 in 633.1 mm
Section width 7.28 in 185 mm
Sidewall height 5.46 in 138.75 mm
Revs / mile 809 speedo calibration

Before you fit 185/75R14: verify the vehicle placard, load index, speed rating, wheel offset, and full-lock/full-compression clearance. Nominal dimensions do not guarantee a safe physical fit.

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Full dimensions

Measurement Metric Imperial
Overall diameter 633.1 mm 24.93 in
Section width 185 mm 7.28 in
Sidewall height 138.75 mm 5.46 in
Rim diameter 355.6 mm 14 in
Circumference 1988.9 mm 78.30 in
Revolutions per mile 809.1
Aspect ratio 75%

NHTSA safety record for 185/75R14

Drawn from official U.S. government (NHTSA) consumer complaint and recall filings for this exact tire size — not the generic averages you'll find elsewhere.

Complaints on record 20 filed with NHTSA
Recalls on record 0 none on record
Reported harm 2 reported crashes · 1 injury

What owners report fails — 185/75R14

  • Tread separation 7
  • Out of round 2
  • Road hazard 2
  • Cracking 1
  • Blowout 1

These are unverified consumer reports and manufacturer recalls filed with the National Highway Traffic Safety Administration — not validated failure rates, and not adjusted for how many tires of this size are in service. Popular sizes naturally accumulate more reports. Use this as a research signal, not a verdict on any specific tire. Data as of 2021. Source: NHTSA Office of Defects Investigation (public domain). Always check the latest recalls at NHTSA.gov and report a tire problem if you have one.

How 185/75R14 compares inside the NHTSA size dataset

Complaint rank #101 of 271 among 271 safety-record sizes
Vs dataset median 10 above median 10 complaints
Top failure share 35% Tread separation

This comparison is derived only from tire sizes that have a real NHTSA complaint or recall record in the TreadSize dataset. Source: NHTSA ODI — Consumer Complaints (FLAT_CMPL) + Recalls (FLAT_RCL), U.S. DOT public domain; Complaints through 2021.

Nearby safety records by complaint volume

265/70R18 20 complaints · 1 recalls 205/70R14 20 complaints · 0 recalls 235/80R17 21 complaints · 3 recalls 275/70R22 19 complaints · 2 recalls 215/60R17 21 complaints · 1 recalls 225/70R14 19 complaints · 1 recalls 275/65R20 19 complaints · 1 recalls 195/55R16 19 complaints · 0 recalls

Dataset download: JSON or CSV. Latest recall lookup: NHTSA.gov.

Related tire sizes

195/75R14 → 205/75R14 → 185/70R14 → 185/65R14 →
Decode another tire size →  ·  Compare two sizes →  ·  Plus sizing →

Frequently asked questions

What is the overall diameter of a 185/75R14 tire?

A 185/75R14 tire has an overall diameter of 24.93 inches (633.1 mm).

How tall is a 185/75R14 tire?

The sidewall height is 138.75 mm (5.46 inches), and the overall diameter from the ground to the top of the tire is 24.93 inches.

How many revolutions per mile does a 185/75R14 tire make?

A 185/75R14 tire makes approximately 809 revolutions per mile. Your speedometer is calibrated to this number.

What rim size does a 185/75R14 tire fit?

A 185/75R14 tire is designed for a 14-inch rim (355.6 mm).

Are there recalls or safety complaints for 185/75R14 tires?

NHTSA has 20 consumer complaints on record for the 185/75R14 size; the most reported issue is tread separation (7 reports). These are unverified consumer reports, not validated failure rates, and are not adjusted for how many tires of this size are in service.

All dimensions calculated using standard ETRTO formulas. Always confirm fitment with your vehicle's door-placard and a qualified tire professional before purchasing.