ElpiAuto265/75R17 vs 35X12.50R17
35X12.50R17 is 2.35″ (60 mm) taller than 265/75R17, a 7.2% difference in overall diameter — outside the ±3% band, so expect the speedometer to drift and check for rubbing before fitting.
| Measurement | 265/75R17 | 35X12.50R17 | Difference | % |
|---|---|---|---|---|
| Overall diameter | 32.65″ | 35.00″ | +2.35″ | +7.2% |
| Section width | 10.43″ | 12.50″ | +2.07″ | +19.8% |
| Sidewall height | 7.82″ | 9.00″ | +1.18″ | +15.0% |
| Circumference | 102.57″ | 109.96″ | +7.38″ | +7.2% |
| Revs per mile | 617.7 | 576.2 | −41.5 | −6.7% |
| Revs per km | 383.8 | 358.1 | −25.8 | −6.7% |
Speedometer: with 265/75R17 as the original, 35X12.50R17 makes an indicated 60 mph really about 64.3 mph, and the axle sits ~1.18″ higher.
Reading this comparison
The overall diameter is what matters here: 35X12.50R17 is the taller tire. It sets ride height, gearing and how far the tire travels per revolution — which is what the speedometer and odometer count. Width and sidewall change fit and feel (a wider tire needs a wider wheel and more clearance; a shorter sidewall sharpens steering) but not the gearing.
Figures are geometric estimates from the size codes; real moulded tires vary by brand by 1–3%. Confirm load rating, wheel width and physical clearance on your vehicle before fitting. To compare any other two sizes, use the tire size comparison tool; to decode one size and see what else fits its wheel, the tire size calculator.