{
"input": "225/60R16 98H",
"normalized": "225/60R16 98H",
"format": "metric",
"type": {
"code": null,
"name": "Passenger (Euro-metric / ISO)"
},
"construction": {
"code": "R",
"name": "Radial"
},
"aspectRatio": 60,
"width": {
"mm": 225,
"in": 8.86
},
"sidewall": {
"mm": 135,
"in": 5.31
},
"rim": {
"in": 16,
"mm": 406.4
},
"diameter": {
"mm": 676.4,
"in": 26.63
},
"circumference": {
"mm": 2125,
"in": 83.66
},
"revolutions": {
"perMile": 757,
"perKm": 471
},
"service": {
"loadIndex": {
"index": 98,
"kg": 750,
"lb": 1653
},
"speedRating": {
"symbol": "H",
"kmh": 210,
"mph": 130
},
"text": "98H"
},
"loadRange": null,
"approximate": false,
"notes": [],
"warnings": [],
"disclaimer": "Computed from the size code and public standards; nominal, unloaded dimensions. Not a safety recommendation: follow the vehicle placard (door jamb) and the tire maker's load and inflation tables."
}
curl --location --request GET 'https://zylalabs.com/api/14561/tire+size+decoder+api/37305/decode+a+tire+size?size=225/60R16 98H' --header 'Authorization: Bearer YOUR_API_KEY'
{
"from": "225/60R16 98H",
"to": "235/65R16 103H",
"diameter": {
"from": {
"mm": 676.4,
"in": 26.63
},
"to": {
"mm": 711.9,
"in": 28.03
},
"difference": {
"mm": 35.5,
"in": 1.4,
"percent": 5.25
}
},
"width": {
"from": {
"mm": 225,
"in": 8.86
},
"to": {
"mm": 235,
"in": 9.25
},
"difference": {
"mm": 10,
"in": 0.39,
"percent": 4.44
}
},
"sidewall": {
"from": {
"mm": 135,
"in": 5.31
},
"to": {
"mm": 152.8,
"in": 6.01
},
"difference": {
"mm": 17.8,
"in": 0.7,
"percent": 13.19
}
},
"circumference": {
"from": {
"mm": 2125,
"in": 83.66
},
"to": {
"mm": 2236.5,
"in": 88.05
},
"difference": {
"mm": 111.5,
"in": 4.39,
"percent": 5.25
}
},
"revolutions": {
"from": {
"perMile": 757,
"perKm": 471
},
"to": {
"perMile": 720,
"perKm": 447
},
"difference": {
"perMile": -37,
"perKm": -24
}
},
"speedometer": {
"unit": "mph",
"indicated": 60,
"actual": 63.1,
"errorPercent": 5.25,
"reads": "low (you are going faster than it shows)"
},
"odometer": {
"unit": "miles",
"shown": 100,
"actual": 105.25
},
"guideline": {
"maxDiameterDifferencePercent": 3,
"withinGuideline": false,
"note": "Within 3% of the original overall diameter is the common rule of thumb; the vehicle maker's approved sizes come first."
},
"warnings": [
"The overall diameter differs by 5.25% (more than the common 3% guideline): speedometer, ABS/stability control, gearing and clearance can be affected."
],
"notes": [],
"disclaimer": "Computed from the size code and public standards; nominal, unloaded dimensions. Not a safety recommendation: follow the vehicle placard (door jamb) and the tire maker's load and inflation tables."
}
curl --location --request GET 'https://zylalabs.com/api/14561/tire+size+decoder+api/37306/compare+two+sizes?from=225/60R16 98H&to=235/65R16 103H&speed=60&unit=mph' --header 'Authorization: Bearer YOUR_API_KEY'
{
"index": 98,
"kg": 750,
"lb": 1653,
"notes": [
"Maximum load per tire at the maker's reference inflation pressure. A P-metric tire on a light truck, SUV or trailer is derated by 1.10 in US practice."
],
"disclaimer": "Computed from the size code and public standards; nominal, unloaded dimensions. Not a safety recommendation: follow the vehicle placard (door jamb) and the tire maker's load and inflation tables."
}
curl --location --request GET 'https://zylalabs.com/api/14561/tire+size+decoder+api/37307/load+index+lookup?index=98' --header 'Authorization: Bearer YOUR_API_KEY'
{
"symbol": "H",
"kmh": 210,
"mph": 130,
"disclaimer": "Computed from the size code and public standards; nominal, unloaded dimensions. Not a safety recommendation: follow the vehicle placard (door jamb) and the tire maker's load and inflation tables."
}
curl --location --request GET 'https://zylalabs.com/api/14561/tire+size+decoder+api/37308/speed+rating+lookup?symbol=H&unit=mph' --header 'Authorization: Bearer YOUR_API_KEY'
{
"input": "DOT U2LL LMLR 2319",
"dateCode": "2319",
"format": "4 digits (2000 onward)",
"week": 23,
"year": 2019,
"manufactured": {
"weekStart": "2019-06-09",
"weekEnd": "2019-06-15",
"month": "2019-06"
},
"plantCode": "U2LL",
"plant": {
"code": "U2",
"format": "2-symbol",
"found": true,
"rule": "49 CFR 574.5(g): 2-symbol plant code (until April 13, 2025), size code, optional code, date code",
"sizeCode": "LL",
"optionalCode": "LMLR",
"matches": [
{
"code": "1U2",
"formerCode": "U2",
"name": "Sumitomo Rubber Industries, Ltd. - Shirakawa Plant",
"city": "Shirakawa-shi",
"state": "Fukushima-ken",
"country": "JAPAN",
"status": "Active"
}
],
"notes": [
"The plant code names the factory, not the brand: one plant can make tires for several brands (the brand is on the sidewall)."
]
},
"asOf": "2026-10-16",
"age": {
"years": 7.4,
"months": 88
},
"warnings": [
"6 years or older: many vehicle makers advise replacing tires 6 years after manufacture, and annual inspection by a professional is commonly recommended from 5 years. Check the vehicle and tire maker's guidance."
],
"notes": [
"Week 01 is the first full Sunday-Saturday week of the year (49 CFR 574.5). The date code is on one sidewall only; look on both sides."
],
"disclaimer": "Computed from the size code and public standards; nominal, unloaded dimensions. Not a safety recommendation: follow the vehicle placard (door jamb) and the tire maker's load and inflation tables."
}
curl --location --request GET 'https://zylalabs.com/api/14561/tire+size+decoder+api/37309/decode+a+dot+code+tire+age+and+plant?code=DOT U2LL LMLR 2319&asOf=2026-10-16' --header 'Authorization: Bearer YOUR_API_KEY'
注册后,每个开发者都会被分配一个个人 API 访问密钥,这是一个唯一的字母和数字组合,用于访问我们的 API 端点。要使用 轮胎尺寸解码器 API 进行身份验证,只需在 Authorization 标头中包含您的 bearer token。
| 标头 | 描述 |
|---|---|
授权
|
必需
应为 Bearer access_key. 订阅后,请查看上方的"您的 API 访问密钥"。
|
每个端点返回与轮胎尺寸相关的结构化数据,包括宽度、扁平比、负载指数、速度等级和DOT日期代码等规格。例如,“解码轮胎尺寸”端点提供详细的轮胎尺寸和服务描述,而“比较两种尺寸”端点则突出尺寸指标的差异
关键字段包括“输入”“规范”“宽度”“直径”“服务”(载重指数和速度等级)以及“备注”例如“解码轮胎尺寸”的响应包括毫米和英寸的轮胎尺寸以及载重和速度等级
参数因端点而异 对于“解码轮胎尺寸”,您提供轮胎尺寸字符串 在“比较两个尺寸”中,您指定要比较的两个轮胎尺寸 “载重指数查询”和“速度等级查询”端点接受特定的指数或符号值,而“解码DOT日期代码”需要DOT号码
响应数据以JSON格式组织,包含嵌套对象。例如,“比较两个尺寸”端点包括直径、宽度和侧壁的单独部分,每个部分详细列出“从”和“到”值,以及毫米、英寸和百分比的差异
数据是根据轮胎尺寸代码和公共标准计算得出的,确保反映名义上未载荷的尺寸。API强调用户应遵循车辆标牌和轮胎制造商的指南以确保安全和准确性
典型的使用案例包括确定车辆轮胎尺寸的兼容性 根据轮胎变化评估车速表的准确性 以及评估轮胎年龄以确保安全 用户还可以检查载重能力和速度等级以确保符合车辆规格
用户可以利用返回的数据做出关于轮胎购买、更换和维护的明智决策。例如,比较轮胎尺寸有助于评估对车辆性能的潜在影响,而DOT日期代码则向用户提供有关轮胎年龄和安全建议的信息
如果请求返回部分或空结果,用户应验证输入参数的准确性。例如,无效的轮胎尺寸可能会导致400错误。用户还可以参考API文档以获取有效输入格式和预期输出的指导