TreadSize

Decoded sidewall size

445/50R22 tire size

445/50R22 in inches: 39.52" overall diameter — 17.52" wide, 8.76" sidewall.

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

445/50R22 tire detail photo with TreadSize diameter, width, and rim measurement card
Overall diameter 39.52 in 1003.8 mm
Section width 17.52 in 445 mm
Sidewall height 8.76 in 222.5 mm
Revs / mile 510 speedo calibration

Before you fit 445/50R22: 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 1003.8 mm 39.52 in
Section width 445 mm 17.52 in
Sidewall height 222.5 mm 8.76 in
Rim diameter 558.8 mm 22 in
Circumference 3153.5 mm 124.15 in
Revolutions per mile 510.3
Aspect ratio 50%

NHTSA safety record for 445/50R22

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

What owners report fails — 445/50R22

  • Road hazard 1
  • Tread separation 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 445/50R22 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 33% 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 165/25R15 3 complaints · 0 recalls 185/55R15 3 complaints · 0 recalls 185/55R17 3 complaints · 0 recalls 195/95R15 3 complaints · 0 recalls

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

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Frequently asked questions

What is the overall diameter of a 445/50R22 tire?

A 445/50R22 tire has an overall diameter of 39.52 inches (1003.8 mm).

How tall is a 445/50R22 tire?

The sidewall height is 222.5 mm (8.76 inches), and the overall diameter from the ground to the top of the tire is 39.52 inches.

How many revolutions per mile does a 445/50R22 tire make?

A 445/50R22 tire makes approximately 510 revolutions per mile. Your speedometer is calibrated to this number.

What rim size does a 445/50R22 tire fit?

A 445/50R22 tire is designed for a 22-inch rim (558.8 mm).

Are there recalls or safety complaints for 445/50R22 tires?

NHTSA has 3 consumer complaints on record for the 445/50R22 size; the most reported issue is road hazard (1 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.