TreadSize

Decoded sidewall size

225/75R15 tire size

225/75R15 in inches: 28.29" overall diameter — 8.86" wide, 6.64" sidewall.

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

225/75R15 tire detail photo with TreadSize diameter, width, and rim measurement card
Overall diameter 28.29 in 718.5 mm
Section width 8.86 in 225 mm
Sidewall height 6.64 in 168.75 mm
Revs / mile 713 speedo calibration

Before you fit 225/75R15: 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 718.5 mm 28.29 in
Section width 225 mm 8.86 in
Sidewall height 168.75 mm 6.64 in
Rim diameter 381 mm 15 in
Circumference 2257.2 mm 88.87 in
Revolutions per mile 713.0
Aspect ratio 75%

NHTSA safety record for 225/75R15

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 234 filed with NHTSA
Recalls on record 0 none on record
Reported harm 10 reported crashes · 8 injuries · 1 fire

What owners report fails — 225/75R15

  • Blowout 98
  • Tread separation 90
  • Cracking 8
  • Out of round 7
  • Road hazard 7

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 225/75R15 compares inside the NHTSA size dataset

Complaint rank #7 of 271 among 271 safety-record sizes
Vs dataset median 224 above median 10 complaints
Top failure share 42% Blowout

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

235/75R15 228 complaints · 8 recalls 265/70R17 224 complaints · 12 recalls 225/75R16 255 complaints · 8 recalls 235/85R16 197 complaints · 10 recalls 205/55R16 275 complaints · 3 recalls 235/80R16 191 complaints · 0 recalls 215/60R16 281 complaints · 3 recalls 205/65R15 173 complaints · 2 recalls

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

Related tire sizes

215/75R15 → 235/75R15 → 205/75R15 → 225/70R15 → 225/75R16 →
Decode another tire size →  ·  Compare two sizes →  ·  Plus sizing →

Frequently asked questions

What is the overall diameter of a 225/75R15 tire?

A 225/75R15 tire has an overall diameter of 28.29 inches (718.5 mm).

How tall is a 225/75R15 tire?

The sidewall height is 168.75 mm (6.64 inches), and the overall diameter from the ground to the top of the tire is 28.29 inches.

How many revolutions per mile does a 225/75R15 tire make?

A 225/75R15 tire makes approximately 713 revolutions per mile. Your speedometer is calibrated to this number.

What rim size does a 225/75R15 tire fit?

A 225/75R15 tire is designed for a 15-inch rim (381 mm).

Are there recalls or safety complaints for 225/75R15 tires?

NHTSA has 234 consumer complaints on record for the 225/75R15 size; the most reported issue is blowout (98 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.