tireheight.com285/75R16 vs 305/70R16
285/75R16 and 305/70R16 are about the same height: 32.9″ and 32.9″ on average as listed by their makers (32.83″ and 32.81″ on paper).
What changes
Going from 285/75R16 to 305/70R16.
Lift is half the height difference, since the axle sits at the middle of the tire. The speedometer figure assumes it was set for 285/75R16 and uses the revolutions per mile the makers publish: at an indicated 60 mph you'd be doing 60.0 mph.
Side by side
| 285/75R16 | 305/70R16 | Difference | |
|---|---|---|---|
| Listed height ″ | 32.80–33.19 | 32.80–33.10 | +0.01 |
| Size code height ″ | 32.83 | 32.81 | −0.02 |
| Height under load ″ | 31.9 | 31.9 | −0.0 |
| Width ″ | 11.22 | 12.01 | +0.79 |
| Listed width ″ | 11.2–11.7 | 12.0–12.3 | +0.9 |
| Sidewall ″ | 8.42 | 8.41 | −0.01 |
| Wheel ″ | 16 | 16 | same |
| Weight lb | 52.7–67.0 | 58.0–69.8 | +3.3 |
| Tread depth /32″ | 14–19 | 16–20 | +0.5 |
| Tires listed | 18 | 7 |
Tires sold in both sizes
The same model in each size, by the heights the maker lists. Averages where a model comes in several load ranges.
| Tire | 285/75R16 ″ | 305/70R16 ″ | Taller by | Heavier by |
|---|---|---|---|---|
| BFGoodrich All-Terrain T/A KO3 | 32.80 | 32.80 | +0.00″ | +3.8 lb |
| BFGoodrich Mud-Terrain T/A KM3 | 32.80 | 32.80 | +0.00″ | +3.5 lb |
| General Grabber A/TX | 32.80 | 32.80 | +0.00″ | +4.8 lb |
| Mickey Thompson Baja Legend EXP | 33.00 | 33.10 | +0.10″ | +1.0 lb |
| Mickey Thompson Baja Legend MTZ | 33.00 | 33.00 | +0.00″ | +1.0 lb |
| Toyo Open Country A/T III | 32.95 | 32.84 | −0.12″ | +5.8 lb |
| Toyo Open Country M/T | 33.03 | 33.02 | −0.01″ | +2.8 lb |
Questions about 285/75R16 vs 305/70R16
How much taller is 305/70R16 than 285/75R16?
0.01″ on average, going by the heights tire makers list: 285/75R16 tires are listed at 32.80–33.19″ and 305/70R16 at 32.80–33.10″. The size codes work out to 32.83″ and 32.81″, a 0.02″ difference the other way.
How much lift does 305/70R16 give over 285/75R16?
Almost none: the tire's radius changes by 0.01″. 305/70R16 is also 0.79″ wider on paper, 0.39″ per side on the same wheel. Whether it fits depends on your vehicle, lift and wheel offset.
Will my speedometer be off with 305/70R16 instead of 285/75R16?
Barely: about 0.0% fast.
Can 305/70R16 go on the same wheel as 285/75R16?
Both fit a 16-inch wheel. Wheel widths approved for both run from 8.0″ to 9.5″.