Decoded sidewall size
275/55R20 tire size
275/55R20 in inches: 31.91" overall diameter — 10.83" wide, 5.95" sidewall.
Methodology: dimensions are calculated from standard ETRTO tire-size formulas. Last reviewed June 2026 by the TreadSize editorial team.
Before you fit 275/55R20: 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 sizeFull dimensions
| Measurement | Metric | Imperial |
|---|---|---|
| Overall diameter | 810.5 mm | 31.91 in |
| Section width | 275 mm | 10.83 in |
| Sidewall height | 151.25 mm | 5.95 in |
| Rim diameter | 508 mm | 20 in |
| Circumference | 2546.3 mm | 100.25 in |
| Revolutions per mile | 632.0 | |
| Aspect ratio | 55% | |
NHTSA safety record for 275/55R20
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.
4 tire recalls on record affecting 275/55R20
- NHTSA 21T012000 · 2021 BRIDGESTONE TURANZA EL440 Tires containing a pinhole may slowly leak air, and the continued loss of air may increase the risk of a vehicle crash.
- NHTSA 18T001000 · 2018 VOGUE SIGNATURE V Missing TIN information can make it difficult for owner to identify the tire in the event of a recall, potentially increasing the risk of driving with a recalled tire which could r
- NHTSA 16T016000 · 2016 CONTINENTAL CROSSCONTACT LX20 The insufficient adhesion can cause partial or full tread/belt loss, increasing the risk of a crash.
- NHTSA 15T022000 · 2015 COOPER COOPER ZEON LTZ Tread cracking or tread lug chunking may cause a loss of tire pressure, increasing the risk of a crash.
What owners report fails — 275/55R20
- Blowout 10
- Cracking 9
- Tread separation 8
- Out of round 4
- Road hazard 4
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. Structured-size complaint coverage ends in 2021; the source files were retrieved on 2026-10-04. Recall records are from the post-2010 extract through that retrieval date and require a matching published size. This does not establish VIN or tire DOT-code applicability. 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.
Recall timeline for 275/55R20
NHTSA campaigns affecting this tire size, grouped from the local recall dataset. Exact owner-notification dates are not stored here; open the campaign at NHTSA for current remedy details.
How 275/55R20 compares inside the NHTSA size dataset
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; Official files retrieved 2026-10-04. Structured-size complaints through 2021; newer tire complaints cannot be reliably assigned to a size. Counts are unique ODI numbers per size. Decimal-rim sizes are excluded instead of rounded. Changes from older extracts reflect these corrections, not a change in tire failure risk.
Nearby safety records by complaint volume
Dataset download: JSON or CSV. Latest recall lookup: NHTSA.gov.
Related tire sizes
Frequently asked questions
What is the overall diameter of a 275/55R20 tire?
A 275/55R20 tire has an overall diameter of 31.91 inches (810.5 mm).
How tall is a 275/55R20 tire?
The sidewall height is 151.25 mm (5.95 inches), and the overall diameter from the ground to the top of the tire is 31.91 inches.
How many revolutions per mile does a 275/55R20 tire make?
A 275/55R20 tire makes approximately 632 revolutions per mile. Your speedometer is calibrated to this number.
What rim size does a 275/55R20 tire fit?
A 275/55R20 tire is designed for a 20-inch rim (508 mm).
Are there recalls or safety complaints for 275/55R20 tires?
NHTSA has 38 consumer complaints on record for the 275/55R20 size and 4 recalls; the most reported issue is blowout (10 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.