245/45R17 tire size
A 245/45R17 tire is 245 mm wide with a 110.3 mm sidewall, 45% of the width, on a 17-inch rim, which puts the whole tire at 652.3 mm, or about 25.7 inches, tall. No model in our data leaves the factory on it, but it can replace the original size on 15 models within 3% of the height.
Overall height
652.3 mm
25.7 in
Sidewall
110.3 mm
45%
Circumference
2,049 mm
Revs per km
488
Actual dimensions of 245/45R17
| Section width | 245 mm (9.6 in) |
| Sidewall height | 110.3 mm (4.34 in) |
| Rim diameter | 17 in (431.8 mm) |
| Overall diameter | 652.3 mm (25.7 in) |
| Circumference | 2,049 mm |
| Revolutions per km | 488 |
| Inch notation (height x width) | 25.7x9.6R17 |
Worked out: sidewall 245 x 0.45 = 110.25 mm, rim 17 x 25.4 = 431.8 mm, overall 431.8 + (110.25 x 2) = 652.3 mm, circumference 3.1416 x 652.3 = 2,049 mm. One turn of the tire moves the car about 2.05 m, which is 488 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 245/45R17 from the factory
No model sold in Thailand in our data leaves the factory on 245/45R17.
Cars that can switch to 245/45R17
These cars leave the factory on another size within 3% of the height of 245/45R17. Whether it fits still depends on rim width and wheel-well clearance.
| Model | Factory size | Height difference | Wheel |
|---|---|---|---|
| Honda Accord e:HEV2024–present | 225/50R17 | −0.69% | Same wheel |
| Honda Civic (FC)2016–2021 | 215/50R17 | +0.85% | Same wheel |
| Honda Civic (FE)2021–present | 215/50R17 | +0.85% | Same wheel |
| MG4 Electric2022–present | 215/50R17 | +0.85% | Same wheel |
| MG5Current model | 215/50R17 | +0.85% | Same wheel |
| Toyota Camry HEV2024–present | 215/55R17 | −2.39% | Same wheel |
| Honda BR-V2022–present | 215/55R17 | −2.39% | Same wheel |
| Honda HR-V2015–2021 | 215/55R17 | −2.39% | Same wheel |
| Honda WR-V2023–present | 215/55R17 | −2.39% | Same wheel |
| MG VS HEVCurrent model | 215/55R17 | −2.39% | Same wheel |
| MG ZSCurrent model | 215/55R17 | −2.39% | Same wheel |
| MG ZS EVCurrent model | 215/55R17 | −2.39% | Same wheel |
Showing the 12 closest of 15 models.
Sizes that can replace 245/45R17
Sizes within ±3% of the overall height of 245/45R17. “At 100 km/h” is the real speed when the speedometer reads 100.
| Size | Height | Difference | At 100 km/h | Sidewall | Match | Compare |
|---|---|---|---|---|---|---|
| 245/40R18 | 653.2 mm | +0.9 mm (+0.14%) | 100.1 km/h | 98.0 mm | Very close | Compare |
| 215/45R18 | 650.7 mm | −1.6 mm (−0.25%) | 99.8 km/h | 96.8 mm | Very close | Compare |
| 225/55R16 | 653.9 mm | +1.6 mm (+0.25%) | 100.2 km/h | 123.8 mm | Very close | Compare |
| 245/35R19 | 654.1 mm | +1.8 mm (+0.28%) | 100.3 km/h | 85.8 mm | Very close | Compare |
| 225/50R17 | 656.8 mm | +4.5 mm (+0.69%) | 100.7 km/h | 112.5 mm | Close | Compare |
| 235/35R19 | 647.1 mm | −5.2 mm (−0.80%) | 99.2 km/h | 82.3 mm | Close | Compare |
| 215/50R17 | 646.8 mm | −5.5 mm (−0.84%) | 99.2 km/h | 107.5 mm | Close | Compare |
| 235/40R18 | 645.2 mm | −7.1 mm (−1.09%) | 98.9 km/h | 94.0 mm | Close | Compare |
- Keeping your wheels, the closest is 225/50R17 at 656.8 mm, +4.5 mm (+0.69%) from the original. With the speedometer on 100 km/h, the car would actually be doing about 100.7 km/h. Ground clearance rises by about 2.3 mm.
- Moving up to 18-inch wheels, the closest height match is 245/40R18 (+0.14%), with the sidewall dropping from 110.3 mm to 98.0 mm.
- Going down to 16-inch wheels, 225/55R16 (+0.25%) is the closest match and raises the sidewall to 123.8 mm.
- A larger or wider tire also changes acceleration, fuel use and steering weight, so look beyond the percentage.
Buying 245/45R17 tires
Low-profile sizes are mostly performance tires and price rises with W or Y speed ratings; comfort-focused models exist in the same size if you do not drive hard.
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 245/45R17
The code after the size on the sidewall, as in 245/45R17 95V, is the load index and speed symbol. The common ratings for this size:
| Version | Index | Per tire | Four tires |
|---|---|---|---|
| Standard load (SL) | 95 | 690 kg | 2,760 kg |
| Extra load (XL) | 99 | 775 kg | 3,100 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
V
240 km/h
W
270 km/h
245/45R17 questions
How tall is a 245/45R17 tire?
About 25.7 inches, or 652.3 mm, from top to bottom before it carries weight. Each sidewall is 110.3 mm tall and the tire is 245 mm (9.6 in) wide.
Which cars use 245/45R17 tires?
No car in our data is fitted with 245/45R17 from the factory, but its height is close to the original size on Honda Accord e:HEV, Honda Civic (FC), Honda Civic (FE), MG4 Electric and MG5, so it works as a replacement size.
Can I fit 225/50R17 instead of 245/45R17?
Size-wise, yes: the height differs by +0.69% (+4.5 mm), so an indicated 100 km/h is really about 100.7 km/h. The tread is 20 mm narrower. Check rim width and load index first.
How much weight can a 245/45R17 tire carry?
Most standard-load versions carry load index 95: 690 kg per tire, 2,760 kg across four. XL versions are rated 99, or 775 kg per tire. Look for the number after the size on the sidewall, as in 245/45R17 95V.
Other 17-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.