Wheels is a public bus service in the Tri-Valley region (southeast Alameda County) of the San Francisco Bay Area in California, United States. It is operated by the Livermore Amador Valley Transit Authority (LAVTA). Wheels operates local and limited-stop service in Dublin, Pleasanton, and Livermore, with limited service into Contra Costa County along Interstate 680. The LAVTA was formed in 1985; service began in Dublin and Pleasanton in 1986. In 1987, it took over the 1978-opened Rideo service in Livermore. In 2023, the system had a ridership of 1,289,600, or about 5,100 per weekday as of the fourth quarter of 2023.

The Tri-Valley area is grouping of three valleys in the East Bay region of California's Bay Area. The three valleys are Amador Valley, San Ramon Valley, and Livermore Valley. The Tri-Valley encompasses the cities of Dublin, Livermore, Pleasanton and San Ramon, the town of Danville and the CDPs of Alamo, Blackhawk and Diablo. The area is known for its Mediterranean climate, wineries, and nature. It is primarily suburban in character. The United States Census Bureau defines an urban area centered in the cities of Livermore, Pleasanton, and Dublin with a 2020 population of 240,381, ranked 167th in the United States in terms of population. The total population of the area is estimated to be 361,000. It offers more affordable living accommodations than the cities of San Francisco and San Jose.