TreadSize

Decoded sidewall size

165/25R15 tire size

165/25R15 in inches: 18.25" overall diameter — 6.50" wide, 1.62" sidewall.

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

165/25R15 tire detail photo with TreadSize diameter, width, and rim measurement card
Overall diameter 18.25 in 463.5 mm
Section width 6.50 in 165 mm
Sidewall height 1.62 in 41.25 mm
Revs / mile 1105 speedo calibration

Before you fit 165/25R15: 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.

Compare this size

Full dimensions

Measurement Metric Imperial
Overall diameter 463.5 mm 18.25 in
Section width 165 mm 6.50 in
Sidewall height 41.25 mm 1.62 in
Rim diameter 381 mm 15 in
Circumference 1456.1 mm 57.33 in
Revolutions per mile 1105.2
Aspect ratio 25%

NHTSA safety record for 165/25R15

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 3 filed with NHTSA
Recalls on record 0 none on record
Reported harm 3 reported crashes · 9 injuries

What owners report fails — 165/25R15

  • Road hazard 3

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 165/25R15 compares inside the NHTSA size dataset

Complaint rank #218 of 271 among 271 safety-record sizes
Vs dataset median 7 below median 10 complaints
Top failure share 100% Road hazard

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

120/70R17 3 complaints · 2 recalls 235/55R20 3 complaints · 2 recalls 305/65R17 3 complaints · 1 recalls 155/80R13 3 complaints · 0 recalls 185/55R15 3 complaints · 0 recalls 185/55R17 3 complaints · 0 recalls 195/95R15 3 complaints · 0 recalls 200/50R18 3 complaints · 0 recalls

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

Decode another tire size →  ·  Compare two sizes →  ·  Plus sizing →

Frequently asked questions

What is the overall diameter of a 165/25R15 tire?

A 165/25R15 tire has an overall diameter of 18.25 inches (463.5 mm).

How tall is a 165/25R15 tire?

The sidewall height is 41.25 mm (1.62 inches), and the overall diameter from the ground to the top of the tire is 18.25 inches.

How many revolutions per mile does a 165/25R15 tire make?

A 165/25R15 tire makes approximately 1105 revolutions per mile. Your speedometer is calibrated to this number.

What rim size does a 165/25R15 tire fit?

A 165/25R15 tire is designed for a 15-inch rim (381 mm).

Are there recalls or safety complaints for 165/25R15 tires?

NHTSA has 3 consumer complaints on record for the 165/25R15 size; the most reported issue is road hazard (3 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.