Best 275/45R18 tires
13 rated tires available in this size, scored on dry, wet, snow, comfort and wear.
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Every rated 275/45R18 tire, by season
Ranked by our Relative score, weighed against how many reviews and tests stand behind it.
How scores work
- Relative score
- 0–100. Blends road tests (60%) and owner reviews (40%) category by category, the same way on every TireWheelGuide page. With only one of the two, the missing half is estimated from it, so the score stays closer to average. It needs at least one road test or five owner reviews.
- Ranking
- The score already allows for how much stands behind it: with only a few reviews or tests a tire stays near the typical score. Among similar scores, newer tires rank higher and tires replaced by a newer generation lower.
Best 275/45R18 all-season tires
2
Best 275/45R18 summer tires
10
76 Check price on Amazon · 275/45R18
73 Check price on Amazon · 275/45R18
69 Check price on Amazon · 275/45R18
70 Check price on Amazon · 275/45R18
67 Check price on Amazon · 275/45R18
69 Check price on Amazon · 275/45R18
62 Check price on Amazon · 275/45R18
62 Check price on Amazon · 275/45R18
59 Check price on Amazon · 275/45R18
54 Check price on Amazon · 275/45R18
Best 275/45R18 winter tires
1
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275/45R18 in inches
| Overall diameter | 27.7″ |
| Section width | 10.8″ |
| Rim diameter | 18″ |
| Sidewall height | 124 mm |
| Circumference | 87.2″ |
| Revolutions per mile | 726.9 |
Revolutions per mile: how many times the tire turns in one mile, the count your speedometer is calibrated to.
The closest flotation size is 28x12.00R18 — 0.9% taller and 10.8% wider. Compare them in the calculator.
What rims fit 275/45R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
The rim diameter is fixed at 18″; only the width can change. Rims are usually 70–90% as wide as the tire’s 10.8″ section width.
Fitted from the factory on rims: 18x9, 18x9.5.
Some factory fitments sit outside that range: 18x10. Check the rim width approved for your car before you buy.
Cars that use 275/45R18
Fitted from the factory on at least one trim. Models with the most trims and years in this size come first.
Sizes often compared with 275/45R18
Close alternatives — each opens in the tire size calculator.
275/45R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 275 | The first number is the section width — 275 mm, or about 10.8 inches across the widest part of the tire. |
| 45 | The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 124 mm tall. |
| R18 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 18-inch wheel. |