295/30R18 tire size
295/30R18 is a metric size: 25.0" tall, 11.6" wide, on a 18" rim — about a 25x11.50R18. The sidewall is 3.5" and the tire turns 808 times per mile.
295/30R18 specs
| Overall diameter (height) | 24.97" · 634 mm |
|---|---|
| Section width | 11.61" · 295 mm |
| Sidewall height | 3.48" · 89 mm (30% of width) |
| Rim diameter | 18" |
| Circumference | 78.44" · 1.992 m |
| Revolutions per mile | 808 (502 per km) |
| Inch (flotation) equivalent | 25x11.50R18 |
Equivalent sizes on a 18" 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 | |
|---|---|---|---|---|---|
| 245/40R18 common | 25.72" | +3.00% | -50 mm | 61.8 mph | compare → |
| 225/45R18 common | 25.97" | +4.02% | -70 mm | 62.4 mph | compare → |
| 225/40R18 common | 25.09" | +0.47% | -70 mm | 60.3 mph | compare → |
| 235/40R18 common | 25.40" | +1.73% | -60 mm | 61.0 mph | compare → |
| 255/35R18 common | 25.03" | +0.24% | -40 mm | 60.1 mph | compare → |
| 255/40R18 common | 26.03" | +4.26% | -40 mm | 62.6 mph | compare → |
| 275/35R18 common | 25.58" | +2.44% | -20 mm | 61.5 mph | compare → |
| 265/35R18 common | 25.30" | +1.34% | -30 mm | 60.8 mph | compare → |
| 215/45R18 common | 25.62" | +2.60% | -80 mm | 61.6 mph | compare → |
| 245/35R18 common | 24.75" | -0.87% | -50 mm | 59.5 mph | compare → |
| 215/40R18 | 24.77" | -0.79% | -80 mm | 59.5 mph | compare → |
| 285/35R18 | 25.85" | +3.55% | -10 mm | 62.1 mph | compare → |
| 285/30R18 | 24.73" | -0.95% | -10 mm | 59.4 mph | compare → |
| 315/30R18 | 25.44" | +1.89% | +20 mm | 61.1 mph | compare → |
| 295/35R18 | 26.13" | +4.65% | 0 mm | 62.8 mph | compare → |
| 205/40R18 | 24.46" | -2.05% | -90 mm | 58.8 mph | compare → |
| 335/30R18 | 25.91" | +3.78% | +40 mm | 62.3 mph | compare → |
| 225/35R18 | 24.20" | -3.07% | -70 mm | 58.2 mph | calculate → |
| 215/35R18 | 23.93" | -4.18% | -80 mm | 57.5 mph | calculate → |
| 235/35R18 | 24.48" | -1.97% | -60 mm | 58.8 mph | calculate → |
| 305/30R18 | 25.20" | +0.95% | +10 mm | 60.6 mph | calculate → |
| 155/60R18 | 25.32" | +1.42% | -140 mm | 60.9 mph | calculate → |
| 145/70R18 | 25.99" | +4.10% | -150 mm | 62.5 mph | calculate → |
| 26x12.00R18 | 26.00" | +4.13% | +10 mm | 62.5 mph | calculate → |
| 26x6.00R18 | 26.00" | +4.13% | -143 mm | 62.5 mph | calculate → |
| 26x8.00R18 | 26.00" | +4.13% | -92 mm | 62.5 mph | calculate → |
| 205/45R18 | 25.26" | +1.18% | -90 mm | 60.7 mph | calculate → |
| 345/30R18 | 26.15" | +4.73% | +50 mm | 62.8 mph | calculate → |
Plus / minus sizing: 17" and 19" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 225/45R17 common | 24.97" | +0.02% | -70 mm | 60.0 mph | compare → |
| 205/50R17 common | 25.07" | +0.41% | -90 mm | 60.2 mph | compare → |
| 255/40R17 common | 25.03" | +0.25% | -40 mm | 60.2 mph | compare → |
| 225/35R19 | 25.20" | +0.93% | -70 mm | 60.6 mph | compare → |
| 255/30R19 | 25.02" | +0.22% | -40 mm | 60.1 mph | compare → |
| 245/30R19 | 24.79" | -0.73% | -50 mm | 59.6 mph | calculate → |
| 295/25R19 | 24.81" | -0.65% | 0 mm | 59.6 mph | calculate → |
| 295/35R17 | 25.13" | +0.65% | 0 mm | 60.4 mph | calculate → |
| 315/25R19 | 25.20" | +0.93% | +20 mm | 60.6 mph | calculate → |
| 145/70R17 | 24.99" | +0.09% | -150 mm | 60.1 mph | calculate → |
| 215/35R19 | 24.93" | -0.17% | -80 mm | 59.9 mph | calculate → |
Try another size against 295/30R18
Questions
What size is 295/30R18 in inches?
295/30R18 is about 25.0" tall and 11.6" wide on a 18-inch rim — roughly a 25x11.50R18 in inch sizing.
What does 295/30R18 mean?
295 mm section width, sidewall 30% of the width (3.48"), radial construction, 18-inch rim.
What tire sizes are equivalent to 295/30R18?
On the same 18" rim, within 3% of the diameter: 255/35R18 (+0.24%), 225/40R18 (+0.47%), 215/40R18 (-0.79%), 245/35R18 (-0.87%), 285/30R18 (-0.95%), 305/30R18 (+0.95%).
How many revolutions per mile does a 295/30R18 tire make?
About 808 revolutions per mile (circumference 78.4").
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.