Environmental evidence desk

Continental environmental evidence for tire sourcing

Ask for measured results and test conditions for the exact tire under review. Compare like-for-like evidence before trading rolling resistance against wet grip, wear or casing durability.

Buyer comparison worksheet

Four measures to review with each offer

Each row below identifies the records to request. Enter supplier results and keep missing evidence open until the line is reviewed.

Rolling resistance

Compare: Reported result, method, load and inflation.
Decision: Check tire class and test basis before ranking options.

Wet grip

Compare: Reported wet grip measure and applicable test method.
Decision: Check the road duty and test configuration alongside rolling resistance.

Wear and casing

Compare: Starting tread depth, route duty, load and inspection criteria.
Decision: Use conditions from the intended operation to evaluate wear results.

Shipping configuration

Compare: Pack count, dimensions and lot traceability by SKU.
Decision: Check that a mixed-container loading plan preserves markings and handling limits.

Reference documents

UNECE regulations and amendments
Find the published R117 documents on rolling resistance, rolling sound and wet grip. Check applicability to the tire class and target market.
NHTSA laboratory test procedure TP-139-03
Use the procedure as a reference when reviewing the test basis for an applicable light-vehicle radial tire.

When to check applicability

Before asking for quotes
Record the market and application. Identify the relevant rule and version with the buyer's compliance team.
Before sample acceptance
Match the report and markings to the quoted model, size and manufacturing site where the evidence specifies one.
Before release
Flag any change to the sidewall markings, construction or market for document review.

Ask for the evidence by line item

Include your market and the metric or document you want compared.

Send a document request