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20-inch tires: sizes and treadwear
Quick answer: NHTSA’s UTQG data lists 63 tire sizes for 20-inch wheels (63 with a treadwear grade). 160 tire lines have a grade at one or more of them, and the median treadwear across line × size grades is 320. The size with the most graded lines is 275/55R20 (26).
63graded sizes
160lines
320median grade
452line × size grades
20-inch sizes in the NHTSA data
| Size | Graded lines | Highest treadwear | Median treadwear |
|---|---|---|---|
| 275/55R20 | 26 | 700 | 500 |
| 245/35R20 | 22 | 500 | 300 |
| 255/40R20 | 21 | 560 | 320 |
| 255/45R20 | 21 | 560 | 320 |
| 275/45R20 | 21 | 700 | 320 |
| 255/50R20 | 20 | 700 | 450 |
| 245/40R20 | 18 | 600 | 310 |
| 245/45R20 | 18 | 580 | 370 |
| 275/60R20 | 18 | 800 | 500 |
| 265/50R20 | 17 | 700 | 540 |
| 275/40R20 | 17 | 540 | 340 |
| 255/35R20 | 15 | 500 | 300 |
| 265/45R20 | 14 | 600 | 320 |
| 275/50R20 | 10 | 600 | 360 |
| 295/40R20 | 10 | 540 | 310 |
| 295/45R20 | 10 | 520 | 390 |
| 245/50R20 | 9 | 660 | 500 |
| 285/40R20 | 9 | 560 | 320 |
| 285/50R20 | 9 | 560 | 500 |
| 225/35R20 | 8 | 500 | 350 |
| 235/55R20 | 8 | 680 | 390 |
| 275/35R20 | 8 | 500 | 290 |
| 315/35R20 | 8 | 540 | 300 |
| 265/40R20 | 7 | 540 | 280 |
| 285/35R20 | 7 | 340 | 280 |
| 235/45R20 | 6 | 420 | 320 |
| 235/50R20 | 6 | 540 | 390 |
| 255/55R20 | 6 | 540 | 300 |
| 275/30R20 | 6 | 540 | 300 |
| 285/45R20 | 6 | 440 | 330 |
| 295/35R20 | 6 | 540 | 240 |
| 245/30R20 | 5 | 260 | 240 |
| 305/30R20 | 5 | 300 | 240 |
| 305/40R20 | 5 | 320 | 240 |
| 285/30R20 | 4 | 340 | 300 |
| 225/30R20 | 3 | 500 | 500 |
| 255/60R20 | 3 | 540 | 540 |
| 265/35R20 | 3 | 500 | 220 |
| 305/45R20 | 3 | 500 | 320 |
| 305/50R20 | 3 | 460 | 420 |
Showing 40 of 63 sizes, most graded lines first. Sizes link only where this build has a page. Click a heading to sort.
Treadwear mix at 20 inches
| Treadwear band | Line × size grades | Share |
|---|---|---|
| Under 200 | 23 | 5.1% |
| 200–299 | 107 | 23.7% |
| 300–399 | 122 | 27% |
| 400–499 | 62 | 13.7% |
| 500–599 | 113 | 25% |
| 600–699 | 14 | 3.1% |
| 700–799 | 10 | 2.2% |
| 800 and up | 1 | 0.2% |
Brands with the most 20-inch lines
| Brand | Lines graded at 20 inches |
|---|---|
| Hankook | 39 |
| Bridgestone | 17 |
| Continental | 13 |
| Michelin | 13 |
| Goodyear | 10 |
| Falken | 8 |
| Nexen | 7 |
| Yokohama | 7 |
| Sumitomo | 3 |
| Thunderer | 3 |
Highest treadwear grades at 20 inches
| Tire line | Size | Treadwear |
|---|---|---|
| Bridgestone Alenza AS Ultra | 275/60R20 | 800 |
| Blackhawk HISCEND-H HT01 | 275/55R20 | 700 |
| Nexen TOUR CUV A/S | 275/55R20 | 700 |
| Blackhawk HISCEND-H HT01 | 275/45R20 | 700 |
| Blackhawk HISCEND-H HT01 | 255/50R20 | 700 |
| Nexen TOUR CUV A/S | 255/50R20 | 700 |
| Blackhawk HISCEND-H HT01 | 275/60R20 | 700 |
| Bridgestone Alenza Prestige | 275/60R20 | 700 |
← 19-inch · 21-inch → · All rim sizes
Guides that explain these numbers
FAQ
What does the 20 mean in a tire size?
In a size like 225/65R20, 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 20-inch tire size in NHTSA's data?
By number of graded lines, 275/55R20 (26 line × size grades), followed by 245/35R20 (22). This reflects what is in the NHTSA database, not sales.
What is the typical treadwear grade for 20-inch tires?
The median across 452 line × size grades is 320. Treadwear is the maker's wear rating relative to a control tire, not miles.