Tire size comparison
275/60R15 vs 295/50R15
295/50R15 is −4.9% shorter than 275/60R15: 26.6 in vs 28.0 in (−1.38 in), and 0.8 in wider. With 295/50R15 on a vehicle set up for 275/60R15, the speedometer shows 60 mph at an actual 57.0 mph. That is more than the ±3% difference many shops use as a rule of thumb, so check carefully before switching.
Set up for: going smaller (295/50R15 instead of 275/60R15) · Different situation?
Your current size
e.g. 265/70R17, 2657017 or 33x12.50R20
Where do I find my size?
It's on the tire sidewall, e.g. P265/70R17 115T, and on the tire placard sticker on the driver's door jamb (also in the owner's manual). The placard shows the size the vehicle came with; the sidewall shows what is fitted now. If they differ, use the placard as your starting point. Digits are enough here: 2657017 or 33125020.
Size you're considering
275/60R15 vs 295/50R15: full comparison
| 275/60R15 | 295/50R15 | Difference | |
|---|---|---|---|
| Overall diameter | 27.99 in | 26.61 in | −1.38 in (−4.9%) |
| Width | 10.83 in | 11.61 in | +0.79 in (+7.3%) |
| Sidewall height | 6.50 in | 5.81 in | −0.69 in |
| Circumference | 87.9 in | 83.6 in | −4.3 in |
| Revs per mile (nominal) | 720 | 758 | +37 |
| Wheel diameter | 15 in | 15 in | ±0 in |
| Diameter in mm | 711 | 676 | −35 mm |
Speedometer difference
Your speedometer is calibrated for 275/60R15. Fitted with 295/50R15, the actual speed is the reading × 26.61 ÷ 27.99.
| Speedometer shows | Actual speed | Difference |
|---|---|---|
| 20 mph | 19.0 mph | −1.0 mph |
| 30 mph | 28.5 mph | −1.5 mph |
| 45 mph | 42.8 mph | −2.2 mph |
| 55 mph | 52.3 mph | −2.7 mph |
| 60 mph | 57.0 mph | −3.0 mph |
| 70 mph | 66.6 mph | −3.4 mph |
| 80 mph | 76.1 mph | −3.9 mph |
Real tires: published diameters
275/60R15: 27.9–27.99 in published by 2 makers; 295/50R15: 26.5 in published by 1 maker. Calculated figures assume a nominal tire; the exact difference between two specific tires depends on their models.
More about each size: 275/60R15 · 295/50R15
Related comparisons
FAQ
Which is bigger, 275/60R15 or 295/50R15?
295/50R15 is −4.9% shorter than 275/60R15: 26.6 in vs 28.0 in (−1.38 in).
How much will my speedometer be off with 295/50R15 instead of 275/60R15?
The speedometer is calibrated for 275/60R15. With 295/50R15 it shows 60 mph when you are doing 57.0 mph, and 70 mph at 66.6 mph (−4.9%). Your speedometer also has its own factory tolerance.
Can I replace 275/60R15 with 295/50R15?
The diameter difference is −4.9%. Whether it fits depends on things this calculation can't see: wheel width and offset, clearance at full lock and over bumps, load index and speed rating, and your vehicle maker's approval. Check your door-jamb placard and owner's manual and ask a tire professional.