| Title | An investigation of a low-variability tire treadwear test procedure and of treadwear adjustment for ambient temperature. Volume 1 : the test procedures, statistical analyses, and the findings |
|---|---|
| Record ID | 33369 |
| Personal Name Creator |
Pierce, R. N.; Mason, R. L.; Hudson, K. E.; Staph, H. E. |
| Source | 110p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.); Southwest Research Institute |
| Publisher | United States. Department of Transportation. National Highway Traffic Safety Administration |
| Publication Date | 19850100 |
| Language | English |
| Abstract | The program was conducted to evaluate the variation in tire treadwear rates as experienced on identical vehicles during the various environmental exposure conditions of the winter, spring, and summer seasons. The diurnal/nocturnal effect on the treadwear rate was evaluated by running separate but similar test samples on the same four-car convoys. A two-car convoy was utilized during the spring to extend the total mileage on two of the winter test sets to 24,000 miles. A summer test of 16 test sets in exactly the same test configuration as the previous winter test was conducted using the same vehicles and, where possible, the same drivers. Tread loss was measured by determining the periodic loss in tread-groove depth and in total tire weight. Both methods were very carefully controlled. Special investigations of (1) the effect of different drivers on treadwear results measurement of absolute vehlcle acceleration during normal test operations) and (2) a means of determining projected mileage by using tire weight loss rates. The report contains a statistcal analysis of the wear rates both in mils and grams per 1000 miles as they relate to the vehicle, season, environmental condition, driver, and how eight test sets each of four different manufacturer groups (total of 32 test sets) are variable within themselves. Volume 2, 542 pages, contains data pertaining to the test effort. Volume 3, 502 pages, contains data used in the statistical analysis effort. Report No. EFL-7928-4, "Determination of 100% Tire Tread Loss by Weight", has been prepared as a supplement to this report. |
| Rosap ID | dot:8601 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/8601 |
| TRT Terms | Tires; Tire treads; Temperature endurance tests; Statistical analysis |
| Classification | NTL - SAFETY AND SECURITY - SAFETY AND SECURITY; NTL - SAFETY AND SECURITY - Human Factors |
| Geographical Coverage |
United States |
| OCLC | 11974344 |
| TRIS Online Accession No |
399266 |
| Contract Number | DTNH22-84-C-07106 |
| Report Number | DOT HS 806 710; EFL-7928-1 |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/33000/33300/33369/33369.pdf |
| Format | |
| Database | NTL Digital Repository |