Browse by rim diameter
13-inch tires: sizes and treadwear
Quick answer: NHTSA’s UTQG data lists 19 tire sizes for 13-inch wheels (19 with a treadwear grade). 68 tire lines have a grade at one or more of them, and the median treadwear across line × size grades is 400. The size with the most graded lines is 175/70R13 (34).
19graded sizes
68lines
400median grade
119line × size grades
13-inch sizes in the NHTSA data
| Size | Graded lines | Highest treadwear | Median treadwear |
|---|---|---|---|
| 175/70R13 | 34 | 640 | 430 |
| 185/70R13 | 16 | 640 | 450 |
| 155/80R13 | 14 | 560 | 360 |
| 185/60R13 | 8 | 460 | 410 |
| 205/60R13 | 8 | 460 | 390 |
| 175/60R13 | 7 | 540 | 400 |
| 165/70R13 | 6 | 500 | 400 |
| 155/70R13 | 5 | 500 | 340 |
| 165/65R13 | 4 | 500 | 410 |
| 165/80R13 | 4 | 500 | 310 |
| 155/65R13 | 3 | 420 | 400 |
| 185/65R13 | 3 | 420 | 380 |
| 135/80R13 | 1 | 320 | 320 |
| 145/60R13 | 1 | 420 | 420 |
| 145/70R13 | 1 | 400 | 400 |
| 145/80R13 | 1 | 300 | 300 |
| 165/60R13 | 1 | 360 | 360 |
| 175/65R13 | 1 | 420 | 420 |
| 175/80R13 | 1 | 320 | 320 |
Sizes link only where this build has a page. Click a heading to sort.
Treadwear mix at 13 inches
| Treadwear band | Line × size grades | Share |
|---|---|---|
| Under 200 | 1 | 0.8% |
| 200–299 | 5 | 4.2% |
| 300–399 | 37 | 31.1% |
| 400–499 | 52 | 43.7% |
| 500–599 | 18 | 15.1% |
| 600–699 | 6 | 5% |
Brands with the most 13-inch lines
| Brand | Lines graded at 13 inches |
|---|---|
| Thunderer | 11 |
| Nexen | 7 |
| Neutral | 5 |
| Hankook | 4 |
| Doral | 3 |
| Yokohama | 3 |
| Epic Tour | 2 |
| Falken | 2 |
| Mohawk | 2 |
| Sumitomo | 2 |
Highest treadwear grades at 13 inches
| Tire line | Size | Treadwear |
|---|---|---|
| Delta ESTEEM XLE | 175/70R13 | 640 |
| Monarch Ovation | 175/70R13 | 640 |
| Delta ESTEEM XLE | 185/70R13 | 640 |
| Monarch Ovation | 185/70R13 | 640 |
| Yokohama AVID Touring | 175/70R13 | 620 |
| Yokohama AVID Touring | 185/70R13 | 620 |
| Cordovan TOUR PLUS TR/HR/VR | 175/70R13 | 580 |
| Mohawk GRAND AM TOUR TR/HR/VR | 175/70R13 | 580 |
Guides that explain these numbers
FAQ
What does the 13 mean in a tire size?
In a size like 225/65R13, the number after R is the wheel (rim) diameter in inches. It must match your wheel exactly; width and aspect ratio come from your vehicle's placard.
What is the most common 13-inch tire size in NHTSA's data?
By number of graded lines, 175/70R13 (34 line × size grades), followed by 185/70R13 (16). This reflects what is in the NHTSA database, not sales.
What is the typical treadwear grade for 13-inch tires?
The median across 119 line × size grades is 400. Treadwear is the maker's wear rating relative to a control tire, not miles.