155/80R15 Tire Size Specifications
Complete dimensional breakdown in inches and millimeters, approved wheel rim widths, vehicle fitments, speedometer error tables, and safe plus-sizing alternatives.
155/80R15 Technical Dimension Table
Standardized measurements computed according to ETRTO & ISO 4000-1 passenger and commercial tire design formulas.
| Specification Property | Imperial (Inches / Miles) | Metric (Millimeters / Kilometers) |
|---|---|---|
| Overall Rolling Diameter | 24.76 in | 628.9 mm |
| Section Width (Cross-section) | 6.1 in | 155 mm |
| Sidewall Cushion Height | 4.88 in | 124 mm |
| Circumference (Rolling Distance) | 77.8 in | 1976.1 mm |
| Revolutions per Distance | 840 revs/mile | 522 revs/km |
| Wheel Rim Diameter | 15 in | 381.0 mm |
| Approved Rim Width Range | 4.2" – 5.4" | 107 – 137 mm |
| Measuring / Ideal Rim Width | 4.8 in | 122 mm |
| Aspect Ratio (Profile %) | 80% of section width | |
What 155/80R15 Is Typically Used For
Dimensions in this range are typical of pickups, SUVs and off-road fitments, where load capacity and sidewall strength matter more than steering response.
To find the size your specific vehicle takes, check the placard on the driver-side door jamb or your owner's manual. Fitment depends on model year, trim, brake caliper clearance, wheel offset and suspension setup, so the correct size for your car is the one the manufacturer specifies.
Popular Comparisons with 155/80R15
Frequently Asked Questions about 155/80R15
What size is 155/80R15 in inches?
The 155/80R15 tire measures approximately 24.76" in overall diameter, 6.1" in section width (tread/sidewall cross-section), and is mounted on a 15" diameter wheel rim.
What rim width is recommended for 155/80R15?
The approved rim width range for 155/80R15 is 4.2" to 5.4" wide, with an ideal measuring rim width of 4.8" for optimal tread contact and even wear.
What are the closest safe alternative sizes for 155/80R15?
Always verify rolling diameter stays within ±3% of 24.76" to prevent transmission strain and speedometer inaccuracies.
How many revolutions per mile does 155/80R15 make?
A standard 155/80R15 tire rotates approximately 840 revolutions per mile (522 revs per kilometer) at normal inflation pressure and rolling radius.