205/75R15 vs 225/70R15
225/70R15 is 7.0 mm taller than 205/75R15 in overall diameter (+1.0%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 225/70R15 fitted, the speedometer reads 100 km/h when you are doing 101.0 km/h.
Dimensions side by side
| 205/75R15 | 225/70R15 | |
|---|---|---|
| Overall diameter | 689 mm (27.1″) | 696 mm (27.4″) |
| Section width | 205 mm | 225 mm |
| Sidewall height | 154 mm | 158 mm |
| Rim | 15″ | 15″ |
| Revolutions per km | 462 | 457 |
| In stock | 1 tire from $140.00 | 4 tires from $123.00 |
What changes
- Overall diameter: 225/70R15 is 7.0 mm taller (+1.0%).
- Speedometer: reads 100 km/h at an actual 101.0 km/h with 225/70R15.
- 225/70R15 is 20 mm wider, so check clearance and the recommended rim width.
- Choose a load index at least as high as the one on your door placard.
Vehicles that came with both sizes
Vehicles that use 205/75R15
Vehicles that use 225/70R15
See every alternate size for 205/75R15
Frequently asked questions
Can I use 225/70R15 instead of 205/75R15?
Usually, yes: 225/70R15 is within 3% of the overall diameter of 205/75R15 (+1.0%). Use wheels of the right size and width, match or exceed the original load index, and check clearance at full steering lock.
How much does the speedometer change between 205/75R15 and 225/70R15?
With 225/70R15 instead of 205/75R15, the speedometer shows 100 km/h when you are actually doing 101.0 km/h.
Which vehicles came with both 205/75R15 and 225/70R15?
Both sizes were original equipment, on different trims or packages, on the 1980–1990 Chevrolet Caprice, 1981–1985 Cadillac Eldorado, 1981–1985 Cadillac Seville, 1984–1985 Buick Riviera, 1982–1985 Oldsmobile Toronado, 1980–1981 Chrysler New Yorker.