275/60R20 vs 295/60R20: full comparison
| Measurement | 275/60R20 | 295/60R20 | Difference |
|---|---|---|---|
| Diameter | 32.99 in | 33.94 in | +0.94 in+2.9% |
| Section width | 10.83 in | 11.61 in | +0.79 in+7.3% |
| Sidewall height | 6.50 in | 6.97 in | +0.47 in+7.3% |
| Circumference | 103.65 in | 106.62 in | +2.97 in+2.9% |
| Revs per mile | 611 | 594 | −17−2.8% |
Speedometer: indicated vs actual speed
With 295/60R20 fitted where 275/60R20 was the stock/calibrated size:
| Speedometer shows | Actual speed | Difference |
|---|---|---|
| 20 mph | 20.6 mph | +0.6 mph |
| 30 mph | 30.9 mph | +0.9 mph |
| 40 mph | 41.1 mph | +1.1 mph |
| 50 mph | 51.4 mph | +1.4 mph |
| 55 mph | 56.6 mph | +1.6 mph |
| 60 mph | 61.7 mph | +1.7 mph |
| 65 mph | 66.9 mph | +1.9 mph |
| 70 mph | 72.0 mph | +2.0 mph |
| 75 mph | 77.1 mph | +2.1 mph |
| 80 mph | 82.3 mph | +2.3 mph |
Recalculate for a gear ratio change too →
Will 295/60R20 fit where 275/60R20 was?
At +2.9%, 295/60R20 is within the ±3% most tire shops and manufacturers accept without recalibrating the speedometer or expecting rubbing -- it should generally bolt on, though wheel width, offset, and suspension travel still matter.
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- Speedometer calculator: true speed after a tire or gear ratio change.
Frequently asked questions
How much bigger is 295/60R20 than 275/60R20?
295/60R20 is 0.94 in taller in overall diameter (+2.9%) and 0.79 in wider in section width (+7.3%) than 275/60R20.
Will 295/60R20 fit in place of 275/60R20?
At +2.9%, 295/60R20 is within the ±3% most tire shops and manufacturers accept without recalibrating the speedometer or expecting rubbing -- it should generally bolt on, though wheel width, offset, and suspension travel still matter.
Does swapping to 295/60R20 affect my speedometer?
With 295/60R20 fitted where 275/60R20 was calibrated, an indicated 60 mph is really about 61.7 mph. That small a difference is within the ±3% most shops treat as close enough not to recalibrate.
Does 295/60R20 change the ride height?
Yes -- half the diameter difference shows up at the axle, so 295/60R20 changes ride height by about 0.47 in higher compared with 275/60R20.
Do 275/60R20 and 295/60R20 use the same wheel (rim) diameter?
Yes -- both fit a 20 inch wheel, so only the tire itself changes, not the wheel.