295/40R20 tire size
295/40R20 is a metric size: 29.3" tall, 11.6" wide, on a 20" rim — about a 29.5x11.50R20. The sidewall is 4.6" and the tire turns 689 times per mile.
295/40R20 specs
| Overall diameter (height) | 29.29" · 744 mm |
|---|---|
| Section width | 11.61" · 295 mm |
| Sidewall height | 4.65" · 118 mm (40% of width) |
| Rim diameter | 20" |
| Circumference | 92.02" · 2.337 m |
| Revolutions per mile | 689 (428 per km) |
| Inch (flotation) equivalent | 29.5x11.50R20 |
Equivalent sizes on a 20" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 245/45R20 common | 28.68" | -2.08% | -50 mm | 58.8 mph | compare → |
| 255/45R20 common | 29.04" | -0.87% | -40 mm | 59.5 mph | compare → |
| 275/40R20 common | 28.66" | -2.15% | -20 mm | 58.7 mph | compare → |
| 255/50R20 common | 30.04" | +2.55% | -40 mm | 61.5 mph | compare → |
| 265/50R20 common | 30.43" | +3.90% | -30 mm | 62.3 mph | compare → |
| 245/50R20 common | 29.65" | +1.21% | -50 mm | 60.7 mph | compare → |
| 275/45R20 common | 29.74" | +1.55% | -20 mm | 60.9 mph | compare → |
| 235/55R20 common | 30.18" | +3.02% | -60 mm | 61.8 mph | compare → |
| 255/40R20 common | 28.03" | -4.30% | -40 mm | 57.4 mph | compare → |
| 265/45R20 common | 29.39" | +0.34% | -30 mm | 60.2 mph | compare → |
| 285/35R20 common | 27.85" | -4.91% | -10 mm | 57.1 mph | compare → |
| 315/35R20 common | 28.68" | -2.08% | +20 mm | 58.8 mph | compare → |
| 295/35R20 | 28.13" | -3.97% | 0 mm | 57.6 mph | compare → |
| 305/35R20 | 28.41" | -3.02% | +10 mm | 58.2 mph | compare → |
| 285/40R20 | 28.98" | -1.08% | -10 mm | 59.4 mph | compare → |
| 235/50R20 | 29.25" | -0.13% | -60 mm | 59.9 mph | compare → |
| 285/45R20 | 30.10" | +2.76% | -10 mm | 61.7 mph | compare → |
| 235/45R20 | 28.33" | -3.29% | -60 mm | 58.0 mph | compare → |
| 295/45R20 | 30.45" | +3.97% | 0 mm | 62.4 mph | compare → |
| 265/40R20 | 28.35" | -3.23% | -30 mm | 58.1 mph | compare → |
| 305/40R20 | 29.61" | +1.08% | +10 mm | 60.6 mph | compare → |
| 335/30R20 | 27.91" | -4.70% | +40 mm | 57.2 mph | calculate → |
| 345/30R20 | 28.15" | -3.90% | +50 mm | 57.7 mph | calculate → |
| 325/35R20 | 28.96" | -1.14% | +30 mm | 59.3 mph | calculate → |
| 29x15.00R20 | 29.00" | -0.99% | +86 mm | 59.4 mph | calculate → |
| 29x18.00R20 | 29.00" | -0.99% | +162 mm | 59.4 mph | calculate → |
| 175/70R20 | 29.65" | +1.21% | -120 mm | 60.7 mph | calculate → |
| 195/55R20 | 28.44" | -2.89% | -100 mm | 58.3 mph | calculate → |
| 225/45R20 | 27.97" | -4.50% | -70 mm | 57.3 mph | calculate → |
| 155/65R20 | 27.93" | -4.64% | -140 mm | 57.2 mph | calculate → |
Plus / minus sizing: 19" and 21" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 235/55R19 common | 29.18" | -0.39% | -60 mm | 59.8 mph | compare → |
| 255/50R19 common | 29.04" | -0.86% | -40 mm | 59.5 mph | compare → |
| 265/50R19 common | 29.43" | +0.48% | -30 mm | 60.3 mph | compare → |
| 265/40R21 common | 29.35" | +0.19% | -30 mm | 60.1 mph | compare → |
| 295/35R21 | 29.13" | -0.55% | 0 mm | 59.7 mph | compare → |
| 255/40R21 | 29.03" | -0.89% | -40 mm | 59.5 mph | compare → |
| 285/45R19 | 29.10" | -0.66% | -10 mm | 59.6 mph | compare → |
| 235/45R21 | 29.33" | +0.12% | -60 mm | 60.1 mph | calculate → |
| 305/35R21 | 29.41" | +0.39% | +10 mm | 60.2 mph | calculate → |
| 295/45R19 | 29.45" | +0.55% | 0 mm | 60.3 mph | calculate → |
| 345/30R21 | 29.15" | -0.48% | +50 mm | 59.7 mph | calculate → |
Try another size against 295/40R20
Questions
What size is 295/40R20 in inches?
295/40R20 is about 29.3" tall and 11.6" wide on a 20-inch rim — roughly a 29.5x11.50R20 in inch sizing.
What does 295/40R20 mean?
295 mm section width, sidewall 40% of the width (4.65"), radial construction, 20-inch rim.
What tire sizes are equivalent to 295/40R20?
On the same 20" rim, within 3% of the diameter: 235/50R20 (-0.13%), 265/45R20 (+0.34%), 255/45R20 (-0.87%), 29x15.00R20 (-0.99%), 29x18.00R20 (-0.99%), 305/40R20 (+1.08%).
How many revolutions per mile does a 295/40R20 tire make?
About 689 revolutions per mile (circumference 92.0").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.