Tyre change: speedo error
API · /tirecalc-api
Tire & Drivetrain API
Tyre, wheel and drivetrain maths as an API. The tire endpoint parses a metric tyre size such as 205/55R16 into all its real dimensions — section width, aspect ratio, sidewall height, rim and overall diameter in millimetres and inches, rolling circumference, and revolutions per kilometre and per mile. The compare endpoint takes an original and a replacement tyre size and works out the change in overall diameter and the resulting speedometer and odometer error — so you know how much faster you are really going than the dial shows after a tyre change. The gear endpoint computes a gear ratio from ring and pinion tooth counts, or the road speed from engine RPM, total gear ratio and tyre size. Everything is computed locally and deterministically, so it is instant and private. Ideal for automotive and motorsport apps, tyre shops and fitment tools, modding and restomod planning, and vehicle configurators. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is tyre and drivetrain maths; for vehicle specifications by VIN use a vehicle-database API.
API salute
salutare- Tempo di attività
- 100.00%
- Sondaggi del server · 24 ore su 24
- Latenza media
- 89 ms
- Sondaggi del server · 24 ore su 24
- Abbonati
- 3,070
- attiva
- Chiamate totali
- 44
- ultimi 7 giorni
Prezzi
Scegli un livello: fatturazione mensile, annullamento in qualsiasi momento.
Free
Gratis
- 8,735 chiamate/mese
- 2 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 8,735 calls/month
- 2 req/sec
- Tyre + compare + gear
- No credit card
Starter
€10.25 /mese
- 18,250 chiamate/mese
- 8 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 18.25k calls/month
- 8 req/sec
- Speedometer-error calc
- Email support
Pro
€30.15 /mese
- 233,500 chiamate/mese
- 20 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 233.5k calls/month
- 20 req/sec
- Automotive / fitment pipelines
- Priority support
Mega
€68.15 /mese
- 1,210,000 chiamate/mese
- 50 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 1.21M calls/month
- 50 req/sec
- Platform scale
- Dedicated SLA
Costruito da
Correlato APIs
Altro APIs con tag sovrapposti.
Gear Ratio API
Gear-train ratio, speed and torque maths as an API, computed locally and deterministically. The ratio endpoint computes the gear ratio of a single pair from the driver and driven tooth counts (or pitch diameters), ratio = N_driven/N_driver, classifies it as a reduction (more torque, less speed) or an overdrive, and — given an input speed and torque — returns the output speed (input/ratio) and the output torque (input·ratio·efficiency). The train endpoint computes a compound gear train: the overall ratio is the product of the individual stage ratios, and it returns each stage ratio, the output speed and torque, noting that idler gears change only the direction of rotation, not the ratio. The solve endpoint finds the missing one of the input speed, the output speed and the ratio from the other two — for example, the ratio needed to drop a 1500 rpm motor to a 500 rpm output. Everything is computed locally and deterministically, so it is instant and private. Ideal for drivetrain, robotics and machine-design tools, gearbox and transmission selection, bicycle and vehicle gearing, and mechanical-engineering education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is gear-train ratio and torque; for spur-gear tooth geometry use a spur-gear API.
api.oanor.com/gearratio-api
Window Tint API
Window-Tint-Mathematik als API, lokal und deterministisch berechnet – die Netto-VLT-Werte, nach denen ein Installateur oder Autobesitzer eine Folie auswählt. Der Haken bei Tönung ist, dass die sichtbare Lichtdurchlässigkeit durch Schichten multipliziert wird: Werksautoglas lässt bereits nur etwa 70–80 % des Lichts durch, daher entspricht die angegebene VLT einer Folie nicht dem, was am Ende herauskommt. Der vlt-Endpunkt multipliziert es aus – netto % = das Produkt der VLT jeder Schicht ÷ 100 – also ergibt eine 35 %-Folie auf 78 %-Werksglas 27,3 %, eine 5 %-Limo-Folie auf demselben Glas 3,9 %, und Sie können mehrere Schichten in einem Aufruf stapeln; er beschreibt auch, wie dunkel das aussieht, von fast klar bis abgedunkelt. Der erforderliche Endpunkt rechnet rückwärts: Um eine Ziel-Netto-VLT durch bekanntes Glas zu erreichen, benötigen Sie eine Folie von Ziel ÷ Glas × 100, also erfordert das Erreichen einer 35 %-Netto-VLT auf 78 %-Glas eine 44,9 %-Folie – und er kennzeichnet den unmöglichen Fall, wenn das Ziel heller ist als das bloße Glas bereits erlaubt. Alles wird lokal und deterministisch berechnet, daher ist es sofort und privat. Ideal für Auto-Tönung, Fahrzeugveredelung, Glas- und Automobil-App-Entwickler, Folienauswahl- und Compliance-Tools sowie Werkstattsoftware. Reine lokale Berechnung – kein Key, kein Drittanbieter-Service, sofort. Gesetzliche Grenzwerte variieren je nach Rechtsordnung – prüfen Sie lokale Gesetze. Live, nichts wird gespeichert. 2 Compute-Endpunkte.
api.oanor.com/windowtint-api
Tire Size API
Tyre-size geometry as an API, computed locally and deterministically. The dimensions endpoint parses a metric tyre code such as 205/55R16 — or separate width, aspect ratio and rim values — into its full geometry: the sidewall height (width·aspect/100), the overall diameter (rim·25.4 + 2·sidewall) in millimetres and inches, the rolling circumference, and the revolutions per kilometre and per mile; a 205/55R16 works out to a 112.75 mm sidewall and a 631.9 mm (24.88 in) outside diameter. The compare endpoint takes an original and a replacement size and computes the speedometer error and ground-clearance change of swapping between them: because the speedometer is calibrated to the original rolling diameter, a larger tyre makes it read low, so true speed = indicated · OD_new/OD_old, and a tyre that is 2 % bigger means an indicated 100 is really about 102 km/h. Staying within ±3 % keeps the error and clearance change small. Tyre codes use the metric P-metric/Euro-metric form. Everything is computed locally and deterministically, so it is instant and private. Ideal for automotive, tyre-shop, fitment, car-enthusiast, fleet and vehicle-spec app developers, plus-sizing and speedo-error tools, and garage software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 2 endpoints. This is metric tyre geometry; for fuel economy use a fuel-economy API.
api.oanor.com/tiresize-api
API de Frenado de Vehículos
Física de frenado de vehículos como API, calculada local y determinísticamente. El endpoint de distancia de frenado calcula la distancia total para detener un vehículo como la suma de la distancia de reacción que el vehículo recorre durante el tiempo de reacción del conductor, v·t, y la distancia de frenado v²/(2·μ·g) — que crece con el cuadrado de la velocidad, por lo que duplicar la velocidad cuadruplica la distancia de frenado — a partir de la velocidad, el coeficiente de fricción neumático-carretera, el tiempo de reacción y la pendiente de la carretera, junto con la desaceleración y el tiempo hasta detenerse. El endpoint de fuerza de frenado calcula la fuerza de frenado F = m·a y la desaceleración de un vehículo, ya sea a partir de una parada en una distancia dada (a = v²/2d) o del coeficiente de fricción (a = μ·g), con la energía cinética que debe disiparse como calor. El endpoint de velocidad de derrape reconstruye la velocidad al inicio de un derrape a partir de la longitud de la marca de derrape, v = √(2·μ·g·d), una estimación de límite inferior utilizada en reconstrucción de accidentes. La velocidad está en km/h por defecto (también m/s o mph), la masa en kg y las distancias en m; el asfalto seco tiene μ ≈ 0.7, mojado ≈ 0.4 y hielo ≈ 0.1. Todo se calcula local y determinísticamente, por lo que es instantáneo y privado. Ideal para desarrolladores de aplicaciones automotrices, de seguridad vial, flotas, telemática y reconstrucción de accidentes, herramientas de distancia de frenado y forenses, y educación en física. Cálculo local puro — sin clave, sin servicio de terceros, instantáneo. En vivo, nada almacenado. 3 endpoints. Esto es frenado de vehículos; para cinemática general use una API de cinemática y para un objeto en una pendiente use una API de plano inclinado.
api.oanor.com/brake-api
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Frammenti di codice
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curl https://api.oanor.com/tirecalc-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/tirecalc-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/tirecalc-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
"https://api.oanor.com/tirecalc-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())
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