265/65R18 tire size
A 265/65R18 tire is 265 mm wide with a 172.3 mm sidewall, 65% of the width, on a 18-inch rim, which puts the whole tire at 801.7 mm, or about 31.6 inches, tall. No model in our data leaves the factory on it, but it can replace the original size on 2 models within 3% of the height.
Overall height
801.7 mm
31.6 in
Sidewall
172.3 mm
65%
Circumference
2,519 mm
Revs per km
397
Actual dimensions of 265/65R18
| Section width | 265 mm (10.4 in) |
| Sidewall height | 172.3 mm (6.78 in) |
| Rim diameter | 18 in (457.2 mm) |
| Overall diameter | 801.7 mm (31.6 in) |
| Circumference | 2,519 mm |
| Revolutions per km | 397 |
| Inch notation (height x width) | 31.6x10.4R18 |
Worked out: sidewall 265 x 0.65 = 172.25 mm, rim 18 x 25.4 = 457.2 mm, overall 457.2 + (172.25 x 2) = 801.7 mm, circumference 3.1416 x 801.7 = 2,519 mm. One turn of the tire moves the car about 2.52 m, which is 397 turns per kilometer. New to sidewall codes? See how to read a tire size.
These are nominal figures from the standard formula. Real tires vary slightly by brand and squat a little under the weight of the car.
Cars fitted with 265/65R18 from the factory
No model sold in Thailand in our data leaves the factory on 265/65R18.
Cars that can switch to 265/65R18
These cars leave the factory on another size within 3% of the height of 265/65R18. Whether it fits still depends on rim width and wheel-well clearance.
Sizes that can replace 265/65R18
Sizes within ±3% of the overall height of 265/65R18. “At 100 km/h” is the real speed when the speedometer reads 100.
| Size | Height | Difference | At 100 km/h | Sidewall | Match | Compare |
|---|---|---|---|---|---|---|
| 265/70R17 | 802.8 mm | +1.1 mm (+0.14%) | 100.1 km/h | 185.5 mm | Very close | Compare |
| 285/60R18 | 799.2 mm | −2.5 mm (−0.31%) | 99.7 km/h | 171.0 mm | Very close | Compare |
| 285/50R20 | 793.0 mm | −8.7 mm (−1.09%) | 98.9 km/h | 142.5 mm | Close | Compare |
| 275/55R20 | 810.5 mm | +8.8 mm (+1.10%) | 101.1 km/h | 151.3 mm | Close | Compare |
| 275/65R17 | 789.3 mm | −12.4 mm (−1.55%) | 98.5 km/h | 178.8 mm | Close | Compare |
| 255/70R17 | 788.8 mm | −12.9 mm (−1.61%) | 98.4 km/h | 178.5 mm | Close | Compare |
| 255/65R18 | 788.7 mm | −13.0 mm (−1.62%) | 98.4 km/h | 165.8 mm | Close | Compare |
| 255/55R20 | 788.5 mm | −13.2 mm (−1.65%) | 98.4 km/h | 140.3 mm | Close | Compare |
- Keeping your wheels, the closest is 285/60R18 at 799.2 mm, −2.5 mm (−0.31%) from the original. With the speedometer on 100 km/h, the car would actually be doing about 99.7 km/h. Ground clearance drops by about 1.3 mm.
- Going down to 17-inch wheels, 265/70R17 (+0.14%) is the closest match and raises the sidewall to 185.5 mm.
Buying 265/65R18 tires
Pickup sizes like this come in quieter, softer H/T tread for paved roads and A/T tread for gravel, which costs more and is noisier. Choose for the roads you actually drive.
Check the production date in the DOT code before paying.
Check current prices
Search by brand
Links open marketplace search results; prices change constantly and not every brand makes this size.
Load index and speed rating for 265/65R18
The code after the size on the sidewall, as in 265/65R18 114S, is the load index and speed symbol. The common ratings for this size:
| Version | Index | Per tire | Four tires |
|---|---|---|---|
| Standard load (SL) | 114 | 1,180 kg | 4,720 kg |
The new tire's load index and speed symbol must be no lower than the door placard, and it only carries its rated load at the correct pressure.
Common speed symbols in this size
S
180 km/h
T
190 km/h
H
210 km/h
265/65R18 questions
How tall is a 265/65R18 tire?
About 31.6 inches, or 801.7 mm, from top to bottom before it carries weight. Each sidewall is 172.3 mm tall and the tire is 265 mm (10.4 in) wide.
Which cars use 265/65R18 tires?
No car in our data is fitted with 265/65R18 from the factory, but its height is close to the original size on Ford Everest and Ford Ranger, so it works as a replacement size.
Can I fit 285/60R18 instead of 265/65R18?
Size-wise, yes: the height differs by −0.31% (−2.5 mm), so an indicated 100 km/h is really about 99.7 km/h. The tread is 20 mm wider. Check rim width and load index first.
How much weight can a 265/65R18 tire carry?
Most standard-load versions carry load index 114: 1,180 kg per tire, 4,720 kg across four. Look for the number after the size on the sidewall, as in 265/65R18 114S.
Other 18-inch sizes
To compare other sizes yourself, use the tire size calculator; changing rim size, try plus/minus sizing; and see speedometer error by speed.