tireheight.com315/70R17 vs 35×12.50R17
35×12.50R17 is 0.2″ taller than 315/70R17 on average, going by the heights their makers list (34.5″ vs 34.7″). On paper the gap is 0.64″.
What changes
Going from 315/70R17 to 35×12.50R17.
Lift is half the height difference, since the axle sits at the middle of the tire. The speedometer figure assumes it was set for 315/70R17 and uses the revolutions per mile the makers publish: at an indicated 60 mph you'd be doing 60.4 mph.
Side by side
| 315/70R17 | 35×12.50R17 | Difference | |
|---|---|---|---|
| Listed height ″ | 34.40–34.65 | 34.50–35.00 | +0.22 |
| Size code height ″ | 34.36 | 35.00 | +0.64 |
| Height under load ″ | 33.4 | 33.7 | +0.2 |
| Width ″ | 12.40 | 12.50 | +0.10 |
| Listed width ″ | 12.6–12.8 | 12.5–13.2 | −0.1 |
| Sidewall ″ | 8.68 | 9.00 | +0.32 |
| Wheel ″ | 17 | 17 | same |
| Weight lb | 61.5–77.5 | 58.8–77.7 | +0.8 |
| Tread depth /32″ | 15–21 | 15–22 | +1.3 |
| Tires listed | 17 | 18 |
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 | 315/70R17 ″ | 35×12.50R17 ″ | Taller by | Heavier by |
|---|---|---|---|---|
| BFGoodrich All-Terrain T/A KO3 | 34.40 | 34.50 | +0.10″ | −2.8 lb |
| BFGoodrich Mud-Terrain T/A KM3 | 34.40 | 34.50 | +0.10″ | +0.5 lb |
| General Grabber X3 | 34.40 | 35.00 | +0.60″ | +0.7 lb |
| Mickey Thompson Baja Boss A/T | 34.50 | 34.50 | +0.00″ | −2.0 lb |
| Mickey Thompson Baja Boss M/T | 34.60 | 34.80 | +0.20″ | +1.0 lb |
| Mickey Thompson Baja Legend EXP | 34.60 | 34.50 | −0.10″ | +2.0 lb |
| Mickey Thompson Baja Legend MTZ | 34.60 | 34.80 | +0.20″ | −2.0 lb |
| Toyo Open Country A/T III | 34.41 | 34.53 | +0.12″ | −4.6 lb |
| Toyo Open Country M/T | 34.65 | 34.84 | +0.20″ | +0.8 lb |
| Toyo Open Country R/T Pro | 34.40 | 34.80 | +0.40″ | −1.5 lb |
| Toyo Open Country R/T Trail | 34.41 | 34.51 | +0.10″ | −0.9 lb |
Questions about 315/70R17 vs 35×12.50R17
How much taller is 35×12.50R17 than 315/70R17?
0.22″ on average, going by the heights tire makers list: 315/70R17 tires are listed at 34.40–34.65″ and 35×12.50R17 at 34.50–35.00″. The size codes work out to 34.36″ and 35.00″, a 0.64″ difference.
How much lift does 35×12.50R17 give over 315/70R17?
The tire's radius grows by 0.11″, so the axle sits about 0.11″ higher, and the top of the tread comes 0.11″ closer to the fender. 35×12.50R17 is also 0.10″ wider on paper, 0.05″ per side on the same wheel. Whether it fits depends on your vehicle, lift and wheel offset.
Will my speedometer be off with 35×12.50R17 instead of 315/70R17?
Yes. If it's set for 315/70R17, it will read about 0.7% slow: at an indicated 60 mph you'll be doing 60.4 mph. Worked out from the revolutions per mile the makers publish.
Can 35×12.50R17 go on the same wheel as 315/70R17?
Both fit a 17-inch wheel. Wheel widths approved for both run from 8.0″ to 11.0″.