275/30R20 tire size
A 275/30R20 tire is 275 mm wide with a 82.5 mm sidewall, 30% of the width, on a 20-inch rim, which puts the whole tire at 673.0 mm, or about 26.5 inches, tall. Our data lists 1 models fitted with it from the factory, mostly sedans.
Overall height
673.0 mm
26.5 in
Sidewall
82.5 mm
30%
Circumference
2,114 mm
Revs per km
473
Actual dimensions of 275/30R20
| Section width | 275 mm (10.8 in) |
| Sidewall height | 82.5 mm (3.25 in) |
| Rim diameter | 20 in (508.0 mm) |
| Overall diameter | 673.0 mm (26.5 in) |
| Circumference | 2,114 mm |
| Revolutions per km | 473 |
| Inch notation (height x width) | 26.5x10.8R20 |
Worked out: sidewall 275 x 0.3 = 82.5 mm, rim 20 x 25.4 = 508 mm, overall 508 + (82.5 x 2) = 673.0 mm, circumference 3.1416 x 673.0 = 2,114 mm. One turn of the tire moves the car about 2.11 m, which is 473 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 275/30R20 from the factory
Models whose Thai-market specification lists 275/30R20; the source column links to the spec we checked.
| Model | Years | Grades | Source |
|---|---|---|---|
| Tesla Model 3 | 2024–present | Performance (rear axle) | headlightmag.com |
Sizes that can replace 275/30R20
Sizes within ±3% of the overall height of 275/30R20. “At 100 km/h” is the real speed when the speedometer reads 100.
| Size | Height | Difference | At 100 km/h | Sidewall | Match | Compare |
|---|---|---|---|---|---|---|
| 245/40R19 | 678.6 mm | +5.6 mm (+0.83%) | 100.8 km/h | 98.0 mm | Close | Compare |
| 245/35R20 | 679.5 mm | +6.5 mm (+0.97%) | 101.0 km/h | 85.8 mm | Close | Compare |
| 255/35R19 | 661.1 mm | −11.9 mm (−1.77%) | 98.2 km/h | 89.3 mm | Close | Compare |
| 255/35R20 | 686.5 mm | +13.5 mm (+2.01%) | 102.0 km/h | 89.3 mm | Within range | Compare |
| 255/40R19 | 686.6 mm | +13.6 mm (+2.02%) | 102.0 km/h | 102.0 mm | Within range | Compare |
| 245/35R19 | 654.1 mm | −18.9 mm (−2.81%) | 97.2 km/h | 85.8 mm | Within range | Compare |
- Keeping your wheels, the closest is 245/35R20 at 679.5 mm, +6.5 mm (+0.97%) from the original. With the speedometer on 100 km/h, the car would actually be doing about 101.0 km/h. Ground clearance rises by about 3.3 mm.
- Going down to 19-inch wheels, 245/40R19 (+0.83%) is the closest match and raises the sidewall to 98.0 mm.
Buying 275/30R20 tires
EVs are heavy and deliver torque instantly, so EV tires are often XL-rated and some carry noise-cutting foam, which puts them above standard tires in price.
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 275/30R20
The code after the size on the sidewall, as in 275/30R20 93V, is the load index and speed symbol. The common ratings for this size:
| Version | Index | Per tire | Four tires |
|---|---|---|---|
| Standard load (SL) | 93 | 650 kg | 2,600 kg |
| Extra load (XL) | 97 | 730 kg | 2,920 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
Y
300 km/h
275/30R20 questions
How tall is a 275/30R20 tire?
About 26.5 inches, or 673.0 mm, from top to bottom before it carries weight. Each sidewall is 82.5 mm tall and the tire is 275 mm (10.8 in) wide.
Which cars use 275/30R20 tires?
From Thai-market specifications, 275/30R20 comes on Tesla Model 3.
Can I fit 245/35R20 instead of 275/30R20?
Size-wise, yes: the height differs by +0.97% (+6.5 mm), so an indicated 100 km/h is really about 101.0 km/h. The tread is 30 mm narrower. Check rim width and load index first.
How much weight can a 275/30R20 tire carry?
Most standard-load versions carry load index 93: 650 kg per tire, 2,600 kg across four. XL versions are rated 97, or 730 kg per tire. Look for the number after the size on the sidewall, as in 275/30R20 93V.
Other 20-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.