295/35R18 vs 295/30R19
295/30R19 is 0.16 in (4.1 mm) shorter than 295/35R18, a −0.62% diameter difference. With the speedometer set for 295/35R18, an indicated 60 mph is 59.6 mph on 295/30R19.
Is this a safe swap?
Diameter difference −0.62%: under 1%
By overall diameter alone, 295/30R19 is a near match for 295/35R18; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.
| Measurement | 295/35R18 | 295/30R19 | Difference | % diff |
|---|---|---|---|---|
| Overall diameter | 26.13 in (663.7 mm) | 25.97 in (659.6 mm) | −0.16 in (−4.1 mm) | −0.62% |
| Sidewall height | 4.06 in (103.3 mm) | 3.48 in (88.5 mm) | −0.58 in (−14.7 mm) | −14.29% |
| Section width | 11.61 in (295.0 mm) | 11.61 in (295.0 mm) | 0.00 in (0.0 mm) | 0.00% |
| Circumference | 82.09 in (2,085.1 mm) | 81.58 in (2,072.2 mm) | −0.51 in (−12.9 mm) | −0.62% |
| Revolutions per mile | 772 | 777 | +5 | +0.62% |
| Indicated | Actual on 295/35R18 | Actual on 295/30R19 | Difference |
|---|---|---|---|
| 30 mph | 30.0 mph | 29.8 mph | −0.2 mph |
| 60 mph | 60.0 mph | 59.6 mph | −0.4 mph |
| 75 mph | 75.0 mph | 74.5 mph | −0.5 mph |
Ride-height change: 295/30R19 lowers the vehicle by 0.08 in (2.1 mm) at the axle (half the −4.1 mm diameter difference).
295/30R19 is 0.16 in shorter than 295/35R18 and the same width, a 0.62% difference in overall diameter.
With the speedometer calibrated for 295/35R18, an indicated 60 mph is actually 59.6 mph on 295/30R19, and revolutions per mile change from 772 to 777.
295/30R19 mounts on a 19-inch wheel, a plus-1 fitment from the 18-inch wheel of 295/35R18.
Size pages
Other comparisons with 295/35R18
- 215/60R16 vs 295/35R18
- 255/45R17 vs 295/35R18
- 235/50R17 vs 295/35R18
- 215/55R17 vs 295/35R18
- 275/35R18 vs 295/35R18
- 285/35R18 vs 295/35R18
- 225/45R18 vs 295/35R18
- 255/40R18 vs 295/35R18
Other comparisons with 295/30R19
- 225/50R17 vs 295/30R19
- 205/55R17 vs 295/30R19
- 255/45R17 vs 295/30R19
- 245/40R18 vs 295/30R19
- 285/35R18 vs 295/30R19
- 225/45R18 vs 295/30R19
- 255/40R18 vs 295/30R19
- 275/30R19 vs 295/30R19
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.