255/60R18 tire size
A 255/60R18 tire is 255 mm wide with a 153.0 mm sidewall, 60% of the width, on a 18-inch rim, which puts the whole tire at 763.2 mm, or about 30.0 inches, tall. Our data lists 3 models fitted with it from the factory, mostly pickups.
Overall height
763.2 mm
30.0 in
Sidewall
153.0 mm
60%
Circumference
2,398 mm
Revs per km
417
Actual dimensions of 255/60R18
| Section width | 255 mm (10.0 in) |
| Sidewall height | 153.0 mm (6.02 in) |
| Rim diameter | 18 in (457.2 mm) |
| Overall diameter | 763.2 mm (30.0 in) |
| Circumference | 2,398 mm |
| Revolutions per km | 417 |
| Inch notation (height x width) | 30.0x10.0R18 |
Worked out: sidewall 255 x 0.6 = 153 mm, rim 18 x 25.4 = 457.2 mm, overall 457.2 + (153 x 2) = 763.2 mm, circumference 3.1416 x 763.2 = 2,398 mm. One turn of the tire moves the car about 2.40 m, which is 417 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 255/60R18 from the factory
Models whose Thai-market specification lists 255/60R18; the source column links to the spec we checked.
| Model | Years | Grades | Source |
|---|---|---|---|
| Nissan Navara | 2021–present | 18-inch wheel grades | nissan.co.th |
| Nissan NP300 Navara | 2014–2020 | V, 4WD V | community.headlightmag.com |
| MG Extender | Current model | 18-inch wheel grades | mgcars.com |
Cars that can switch to 255/60R18
These cars leave the factory on another size within 3% of the height of 255/60R18. Whether it fits still depends on rim width and wheel-well clearance.
| Model | Factory size | Height difference | Wheel |
|---|---|---|---|
| Toyota Fortuner2015–present | 265/60R18 | −1.55% | Same wheel |
| Toyota Hilux Revo2015–2025 | 265/60R18 | −1.55% | Same wheel |
| Toyota Hilux TRAVO2025–present | 265/60R18 | −1.55% | Same wheel |
| Isuzu D-Max2020–present | 265/60R18 | −1.55% | Same wheel |
| Isuzu MU-X2021–present | 265/60R18 | −1.55% | Same wheel |
| Mitsubishi Pajero Sport2015–present | 265/60R18 | −1.55% | Same wheel |
| Mitsubishi Triton2024–present | 265/60R18 | −1.55% | Same wheel |
| Mitsubishi Triton2015–2023 | 265/60R18 | −1.55% | Same wheel |
| Ford Ranger2015–2021 | 265/60R18 | −1.55% | Same wheel |
| Isuzu D-Max2012–2019 | 255/65R17 | −0.01% | Needs 18-inch wheels |
| Honda CR-V2023–present | 235/55R19 | +2.98% | Needs 18-inch wheels |
Sizes that can replace 255/60R18
Sizes within ±3% of the overall height of 255/60R18. “At 100 km/h” is the real speed when the speedometer reads 100.
| Size | Height | Difference | At 100 km/h | Sidewall | Match | Compare |
|---|---|---|---|---|---|---|
| 255/65R17 | 763.3 mm | +0.1 mm (+0.01%) | 100.0 km/h | 165.8 mm | Very close | Compare |
| 255/55R19 | 763.1 mm | −0.1 mm (−0.01%) | 100.0 km/h | 140.3 mm | Very close | Compare |
| 255/50R20 | 763.0 mm | −0.2 mm (−0.03%) | 100.0 km/h | 127.5 mm | Very close | Compare |
| 235/65R18 | 762.7 mm | −0.5 mm (−0.07%) | 99.9 km/h | 152.8 mm | Very close | Compare |
| 265/50R20 | 773.0 mm | +9.8 mm (+1.28%) | 101.3 km/h | 132.5 mm | Close | Compare |
| 245/55R19 | 752.1 mm | −11.1 mm (−1.45%) | 98.5 km/h | 134.8 mm | Close | Compare |
| 245/70R17 | 774.8 mm | +11.6 mm (+1.52%) | 101.5 km/h | 171.5 mm | Close | Compare |
| 245/60R18 | 751.2 mm | −12.0 mm (−1.57%) | 98.4 km/h | 147.0 mm | Close | Compare |
- Keeping your wheels, the closest is 235/65R18 at 762.7 mm, −0.5 mm (−0.07%) from the original. With the speedometer on 100 km/h, the car would actually be doing about 99.9 km/h.
- Moving up to 19-inch wheels, the closest height match is 255/55R19 (−0.01%), with the sidewall dropping from 153.0 mm to 140.3 mm.
- Going down to 17-inch wheels, 255/65R17 (+0.01%) is the closest match and raises the sidewall to 165.8 mm.
- A larger or wider tire also changes acceleration, fuel use and steering weight, so look beyond the percentage.
Buying 255/60R18 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 255/60R18
The code after the size on the sidewall, as in 255/60R18 108S, is the load index and speed symbol. The common ratings for this size:
| Version | Index | Per tire | Four tires |
|---|---|---|---|
| Standard load (SL) | 108 | 1,000 kg | 4,000 kg |
| Extra load (XL) | 112 | 1,120 kg | 4,480 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
255/60R18 questions
How tall is a 255/60R18 tire?
About 30.0 inches, or 763.2 mm, from top to bottom before it carries weight. Each sidewall is 153.0 mm tall and the tire is 255 mm (10.0 in) wide.
Which cars use 255/60R18 tires?
From Thai-market specifications, 255/60R18 comes on Nissan Navara, Nissan NP300 Navara and MG Extender.
Can I fit 235/65R18 instead of 255/60R18?
Size-wise, yes: the height differs by −0.07% (−0.5 mm), so an indicated 100 km/h is really about 99.9 km/h. The tread is 20 mm narrower. Check rim width and load index first.
How much weight can a 255/60R18 tire carry?
Most standard-load versions carry load index 108: 1,000 kg per tire, 4,000 kg across four. XL versions are rated 112, or 1,120 kg per tire. Look for the number after the size on the sidewall, as in 255/60R18 108S.
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.