Off-Road / All-Terrain

315/70R17 Tire Size

315/70R17 is a truck/SUV-oriented size that pairs 315 mm width with a 70% sidewall on a 17-inch wheel. At roughly 34.4" overall (~8.7" sidewall), it is typically chosen for clearance, load capacity, and mixed on/off-road use rather than max fuel economy. Products indexed for this size include all-terrain and touring options. Expect heavier steering and a possible speedometer change vs shorter factory sizes — verify clearance and load range before upgrading.

  • Strong fit for trucks/SUVs, towing, gravel, trails, or overland use depending on tread choice.
  • Indexed products include 4 brands and 24 full-spec rows.
  • Tradeoffs may include ride comfort, steering weight, clearance, speedometer change, or fuel economy depending on the jump from stock.

At a Glance

Nominal dimensions calculated from the 315/70R17 size code (315/70R17). Load range and speed rating come from indexed manufacturer products when available.

Rim Diameter Calculated

17"

Section Width Calculated

315 mm

Aspect Ratio Calculated

70%

Load Range Manufacturer

C, D, E, F

Speed Rating Manufacturer

Q, S, T

Construction Standard

Radial

Applicable Tire Categories

Based on this size’s editorial category and exact-size product metadata. A size may support several uses without every product in the size belonging to every category.

SUV tire sizes Truck tire sizes Off-Road tire sizes

Best For

  • Trucks, SUVs, and builds that need clearance, load capacity, or trail capability
  • Towing, payload, gravel, trails, or overland use with stronger LT options
  • Daily-driven trucks that still see mixed on/off-road miles

Consider Another Size If

  • Fuel economy, light steering, and factory-like ride comfort matter more than clearance
  • You prefer a smaller, more stock look or quieter highway manners
  • You need a dedicated extreme off-road size beyond mixed daily use

Real-World Impact

  • More ground clearance and a taller off-road footprint
  • Stronger load-carrying options for towing and payload
  • Heavier steering feel and a bit more rotational mass
  • Usually a small hit to fuel economy vs smaller highway sizes

Verified Vehicle Examples

Documented OE or commonly associated platforms for 315/70R17.

  • Jeep Wrangler

    Jeep

    Wrangler

    Rubicon 392

    2021–2024

  • Ford Bronco

    Ford

    Bronco

    Raptor

    2022–2024

  • Toyota 4Runner

    Toyota

    4Runner

    TRD Pro

    2015–2024

  • Nissan Frontier

    Nissan

    Frontier

    PRO-4X

    2022–2024

  • Ram 1500

    Ram

    1500

    TRX

    2021–2023

Documented fitment mappings for research. Vehicle clearance depends on trim, wheel offset, suspension height, and tire model — confirm fitment before buying.

Real Tires Available in This Size

Indexed manufacturer models confirmed in exact size 315/70R17

View all indexed tires →

Manufacturer-provided product/spec data from Michelin, Goodyear, BFGoodrich, Toyo, and Falken where available.

All-Terrain

All-Terrain T/A KO2

315/70R17 · 113/110S · Load Range C

All-Terrain

All-Terrain T/A KO3

315/70R17 · 121S · Load Range D

All-Terrain

Open Country A/T III

315/70R17 · 121/118S · Load Range D

All-Terrain

Rubitrek A/T

315/70R17 · 121/118S · Load Range E

All-Terrain

Wildpeak A/T4W

315/70R17 · 113/110S · Load Range C

All-Terrain

Discoverer Stronghold AT

315/70R17 · 126S · Load Range E

Best Options by Use Case

All-Terrain

Best first stop for mixed daily driving, gravel, trails, and overland use.

Top pick

Goodyear Discoverer Stronghold® AT

Other options

  • Goodyear Discoverer® Rugged Trek® LT
  • Goodyear Discoverer® Stt Pro™

Highway / Touring

Better for road noise, towing stability, and long highway mileage.

Top pick

Goodyear Discoverer® S/T Maxx™

Product Spec Comparison

Compare tread depth, weight, max load, pressure, and revs per mile for full-spec 315/70R17 products.

FAQ

Is 315/70R17 good for off-road and truck use?

315/70R17 is a capable off-road and truck use size when clearance, load capacity, or mixed trail use matter. At roughly 34.36" overall (~8.68" sidewall on a 17-inch wheel), it sits in the truck/SUV capability band rather than a pure fuel-economy size. Pair it with the right tread and load range for your mileage mix.

What vehicles use 315/70R17 tires?

315/70R17 is commonly seen on or upgraded to by owners of trucks, SUVs, and crossover platforms that can clear this diameter. Exact factory fitment depends on trim, wheel offset, and suspension height — confirm clearance and load requirements before treating it as a direct replacement.

What load ranges are available?

Indexed products for 315/70R17 include load ranges such as E, D, C, and F, depending on brand and model. Load capacity still comes from the load index and inflation table on the specific tire — not the size code alone. Match the load range to your GVWR and intended payload or towing use.

Which brands make 315/70R17 tires?

Indexed master-database coverage for 315/70R17 includes BFGoodrich, Toyo, Falken, and Goodyear. Availability still varies by load range, tread type, and season — check the product cards and full-spec table on this page for models currently listed.

How does 315/70R17 compare to 305/70R18?

315/70R17 measures about 34.36" overall versus 34.81" for 305/70R18 (-0.4" / -1.3%). The shorter size usually trims rotational mass and can raise the speedometer reading relative to actual speed, with less ground clearance. Always check fender clearance and load rating before switching.

What is the load capacity of 315/70R17?

Load capacity depends on the exact tire, load index, and inflation pressure — not the size code alone. Check the manufacturer load table and your vehicle placard when setting pressure or carrying heavy loads. If multiple load ranges exist for this size, choose the one that meets or exceeds the placard requirement.

Formula & Methodology

Every dimension on this site is computed in code from the tire size label — we do not scrape or hand-copy manufacturer spec sheets for overall diameter or circumference.

  1. Parse the size label. Metric sizes (e.g. 275/70R18, LT265/75R16) and flotation sizes (e.g. 33x12.50R15) are parsed into section width, aspect ratio, construction type, and bead-seat wheel diameter.
  2. Derive nominal dimensions. Sidewall height = section width × aspect ratio ÷ 100. Overall diameter = wheel diameter + 2 × sidewall height. Rolling circumference = π × overall diameter. Revs per mile = 63,360 ÷ circumference (inches per mile). Revs per km uses the same circumference converted to millimetres.
  3. Compare two sizes. Diameter, width, sidewall, and circumference deltas are signed differences between parsed specs. Speedometer error assumes the cluster is calibrated to the reference tire: true speed = indicated speed × (new diameter ÷ reference diameter). Static ground clearance change uses half the overall-diameter delta at each axle.

Rim diameter shown on this page is always 17" — the bead-seat diameter encoded in 315/70R17.

Safety & Fitment Limitations

  • Calculated dimensions are nominal planning baselines from the size code — mounted tires can differ with tread depth, inflation, rim width, and production tolerance.
  • Always confirm 315/70R17 against the door placard or owner’s manual, including load index, load range, and speed rating for your vehicle.
  • Changing diameter affects speedometer accuracy, gearing feel, ABS/traction calibration, and clearance at fenders, control arms, and the spare well.
  • Vehicle examples and product cards are not a guarantee of fitment. Verify wheel diameter (17"), offset, and suspension setup before buying.

Sources & Review

Dimensions are calculated from the tire size label; product rows and fitment mappings come from documented manufacturer and OE sources where available.

  • Curated tire-size dataset. Production tire labels, vehicle categories, and optional load/speed ratings maintained in our internal catalog. Only field-valid sizes that round-trip through the parser are published.
  • ISO / ETRTO service-description tables. Load index → maximum load (kg) and speed rating symbol → maximum sustained speed (km/h) mappings embedded in our rating resolver, aligned with widely published ETRTO reference values.
  • Nominal tire geometry formulas. Overall diameter, sidewall, circumference, and revolutions per mile are calculated from the size code using standard metric and flotation geometric relationships — the same relationships used across the tire industry for nominal sizing.
  • Documented OE fitment mappings. Vehicle make, model, trim, and year-range associations linked to specific tire sizes in our fitment data. These are representative applications for research — always confirm against your door placard.
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Next step: compare 315/70R17 before changing tire sizes

Compare 315/70R17 against nearby sizes like 305/70R18, 285/70R17, 275/70R18 to check diameter change, speedometer impact, clearance, and fitment tradeoffs.

315/70R17 vs 305/70R18 See 315/70R17 product data