// GET /v1/tires · stable

The whole fitment, one call.

Tire sizes front and rear, the recommended pressures, load index, speed rating, staggered and run-flat flags, plus the battery CCA, for the exact config.
235/60R18
front_size and rear_size on the reference CR-V.
33 / 30 psi
recommended front and rear pressures.
103 H
load index and speed rating.
400 CCA
battery cold-cranking amps.

The whole fitment, one call.

Sizes, pressures, load index and speed rating come back together, with the battery's CCA, for the exact config.

tires.sh
curl 'https://vinspeclookup.com/api/v1/tires?vin=5J6RW2H82KL000007' \
  -H 'Authorization: Bearer otp_live_…'
{
  "object": "tires",
  "config": {
    "config_key": "2019_honda_cr_v_ex_l15be",
    "year": 2019,
    "make": "Honda",
    "model": "CR-V",
    "trim": "EX",
    "engine": "1.5L L15BE 4cyl",
    "drivetrain": "4WD"
  },
  "tires": {
    "battery_cca": 400,
    "front_size": null,
    "is_run_flat": null,
    "is_staggered": false,
    "options": [
      {
        "aspect_ratio": 60,
        "is_oem_standard": true,
        "load_index": 103,
        "pressure_front_psi": 33,
        "pressure_rear_psi": 30,
        "rim_diameter_in": 18,
        "size_front": "235/60R18",
        "speed_rating": "H",
        "wheel_spec": "7.5Jx18 ET45",
        "width_mm": 235
      },
      {
        "aspect_ratio": 65,
        "is_oem_standard": false,
        "load_index": 104,
        "pressure_front_psi": 32,
        "pressure_rear_psi": 30,
        "rim_diameter_in": 17,
        "size_front": "235/65R17",
        "speed_rating": "H",
        "wheel_spec": "7.5Jx17 ET45",
        "width_mm": 235
      }
    ],
    "pressure_front_psi": 32,
    "pressure_rear_psi": 30,
    "rear_size": null,
    "source": "https://www.wheel-size.com/size/honda/cr-v/2019/"
  },
  "meta": {
    "generated_at": 1792323140145
  }
}
200 OK · options[] lists every factory fitment
the fitment, as returned
options[0].size_front
235/60R18
is_staggered
false
pressure_front_psi
32
pressure_rear_psi
30
load_index
103
speed_rating
H

Pressures, load, speed, flags.

The console's structured view of the same response: the flags as chips, the figures as cells, the factory options as rows.

Preview · sample

2019 Honda CR-V EX

complete92% filled
Engine
1.5L L15BE 4cyl
Drivetrain
4WD
Transmission
Continuously Variable Transmission (CVT)
Chassis
RW
config_key
2019_honda_cr_v_ex_l15be
square fitmentstandard
Front PSI
32
Rear PSI
30
Battery CCA
400
Factory options
235/60R18LI 103SR HOEM standard
235/65R17LI 104SR H
Generated Oct 18, 2026

Square, staggered, run-flat.

Three booleans drive three chips. The legend below is the render's own chip set with the field that sets each one.

square fitmentis_staggered: false. Same size front and rear.
staggeredis_staggered: true. Different sizes; rotate front to front only.
standardis_run_flat: false. A spare or a kit is expected.
run-flatis_run_flat: true. No spare; replace with run-flat.
OEM standardoptions[].is_oem_standard: true. The size the car left the factory on.

The flags exist so a screen never has to parse a size string to know what to do. A rotation pattern, a replacement rule and a spare-tire prompt each read one boolean. The sizes, pressures, load index and speed rating stay as separate fields for the same reason: a tire shop's order form wants them one per box, and a listing page wants them in one line, and both come from the same response.

// IN USE

Where the fields land.

Three places this response ends up, drawn the way the homepage draws its data groups. Every value in the pictures is from the sample above.

A tire shop order

front_size, rear_size, pressures, load index and speed rating fill the order form one field per box.

The fitment line on a listing

The size buyers ask about first, printed under the trim without anyone typing it.

A fitment quote

Four of the right size, the pressures to set, and the battery CCA for the test, from one call.

// QUESTIONS

Details.

Does it cover optional wheel packages?
options[] lists every factory fitment for the config with is_oem_standard marking the default. Aftermarket sizes are out of scope.
What does is_staggered mean?
Different sizes front and rear. is_run_flat marks run-flat fitment. Both are booleans so a UI can show a chip without parsing sizes.
Why is the battery here?
Because a tire shop is usually also the place a battery gets tested. battery_cca sits in the tires group and in the spec sheet.
Can I get the fitment by year/make/model?
Yes, and if the model has more than one fitment across its configs the API answers 409 with the candidate config_keys instead of guessing. Pass a trim, or pick a config_key, and the call returns the fitment for that exact car.

// TRY IT

Run this response yourself.

Every window on this page is the sandbox's answer for the reference vehicle. Open the console, pick /v1/tires, and run it with no key. Ready for live data across any vehicle? Request access.

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