Replacement tire safety screen
Compare the replacement tire load index at each wheel with the requirement from the door placard, owner's manual, or original-tire service description. This checks load index only; it never treats a speed symbol as load capacity.
Load-index conclusion
Cannot verify this replacement setEnter the required and replacement load indices.
| Position | Required | Replacement | Check |
|---|---|---|---|
| Front left | — | — | Uncertain |
| Front right | — | — | Uncertain |
| Rear left | — | — | Uncertain |
| Rear right | — | — | Uncertain |
A “meets” result means only that each entered replacement load index is equal to or higher than the corresponding requirement. It does not approve the tire size, speed rating, XL or load-range marking, P-metric/LT construction, inflation pressure, wheel, clearance, or vehicle fitment.
The safe requirement must come from the vehicle maker or original fitment. If the placard gives size and pressure but no usable load index, if the service description uses a dual index, or if the fitment changes construction, this tool stops and asks for a manual or professional check instead of guessing.
The local lookup covers single passenger-tire load indices 70 through 129. The index-to-kilogram values are transcribed from the standardized table in UN Regulation No. 30, Annex 4; pounds are rounded from kilograms. NHTSA's tire guidance and interpretation GF002230 provide the US safety context for matching replacement load-carrying capacity to the vehicle manufacturer's/original requirement. NHTSA does not certify this calculator or this transcription.
Capacity is shown per tire at its rated conditions. It must not be multiplied by four to infer vehicle payload, and it does not override placard inflation pressure, GAWR, GVWR, or any owner-manual limit.
Rules as of 2026-07-14; sources checked . Official/reference sources: NHTSA — Tires · NHTSA interpretation GF002230 · UN Regulation No. 30, Annex 4 — load-capacity indices
Do not treat a lower load index as an acceptable replacement. Use the vehicle manufacturer's placard/manual requirement or the original service description, and choose a tire with at least the required load-carrying capacity. A tire professional should approve any changed fitment.
Start with the driver's door or door-jamb placard and the owner's manual. If they do not state a load index, read the complete service description on the OEM/original tire or ask the vehicle manufacturer. Do not infer load index from tire size alone.
No. In a service description such as 102H, 102 is the load index and H is the speed symbol. This checker can extract the number, but it deliberately does not compare or approve the speed rating.
No. A four-tire sum does not establish payload, GAWR, or GVWR. Real axle loading is uneven, and capacity depends on tire construction and correct inflation. Stay within every vehicle placard/manual limit.
No. A dual description such as 120/116S, an LT load range, or a changed P-metric/LT fitment needs the tire manufacturer's pressure/load table and professional review. The checker returns uncertain instead of collapsing those values into one number.
This checker is an educational screening tool, not a substitute for the driver's door placard, owner's manual, vehicle or tire manufacturer instructions, or a qualified tire professional. Never use a “meets” result as proof that a tire is safe or approved for the vehicle.