33x12.50R20 vs 275/65R20
275/65R20 is 3.3% taller (+1.07 in) and 1.67 in narrower than 33x12.50R20.
275/65R20 is 3.3% taller than 33x12.50R20. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock.
| 33x12.50R20 | 275/65R20 | Change | |
|---|---|---|---|
| Diameter | 33.00″ | 34.07″ | +1.07″+3.3% |
| Width | 12.50″ | 10.83″ | −1.67″−13.4% |
| Sidewall | 6.50″ | 7.04″ | +0.54″+8.3% |
| Circumference | 103.7″ | 107.0″ | +3.4″+3.3% |
| Wheel | 20″ | 20″ | Same |
| Revs per mile | 611 | 592 | −19 |
Real speed on 275/65R20.
Change in height under the axle.
On the same wheel, split inboard and outboard.
Shop 275/65R20 tires
Opens the store’s own searchPrices and stock change often, so check a few stores. We don’t earn anything from these links.
33x12.50R20 or 275/65R20?
Can I use 275/65R20 instead of 33x12.50R20?
275/65R20 is 3.3% taller than 33x12.50R20. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock. Also match or beat the original load index and speed rating, and check that the wheel width suits the new tire.
Will my speedometer be off?
At an indicated 60 mph on 275/65R20 you are really doing 62.0 mph if the speedometer was set up for 33x12.50R20. Going the other way, 33x12.50R20 would make it read 58.1 mph at a real 60.
How much ground clearance does it change?
Half the diameter difference: +0.54 in (+14 mm) under the axle.