| Title | An analysis of tire tread wear groove patterns and the effect of heteroscedasticity on tire tread wear statistics |
|---|---|
| Record ID | 33368 |
| Personal Name Creator |
Walter, Robert; Mengert, Peter; Salvatore, S |
| Source | 80p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Publisher | United States. Department of Transportation. National Highway Traffic Safety Administration |
| Publication Date | 19850900 |
| Language | English |
| Abstract | This report examines the groove wear variability among tires subjected to the Uniform Tire Quality Grading (UTQC) test procedure for determining tire tread wear. The effects of heteroscedasticity (variable variance) on a previously reported statistical analysis were also examined. Two data sources were used: special tire tests performed by the Southwest Research Institute (SWRI) for NHTSA, and NHTSA's own compliance tests. The test concluded that groove wear variability exists during UTQG testing with the outside grooves generally wearing more than the inside grooves. The difference in wear between the inside and outside grooves varied from approximately 10 percent to 50 percent. This variability was different for different types but was uniform within the tire types during a test. However, in tests spaced apart in time, this within tire type groove variability will change and is probably influenced by environmental conditions. It was also concluded that heteroscedasticity would have no effect on previously reported statistical results but that this effect could be meaningful on an individual tire basis. |
| Rosap ID | dot:5836 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/5836 |
| TRT Terms | Tires; Tire treads; Wear; Statistical analysis |
| General Subjects | Tire Tread Wear; UTQG Test; Groove Wear; Tire Statistical Analysis |
| Classification | NTL - SAFETY AND SECURITY - SAFETY AND SECURITY; NTL - SAFETY AND SECURITY - Human Factors |
| Geographical Coverage |
United States |
| OCLC | 12708539 |
| TRIS Online Accession No |
496613 |
| Report Number | DOT-TSC-NHTSA-85-3; DOT-HS-806-813 |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/33000/33300/33368/33368.pdf |
| Format | |
| Database | NTL Digital Repository |