Sequoia and Kings Canyon National Parks have a 22' advisory - for good reason. Anything larger may not fit on the tight curves. Expert drivers can get larger rigs in. The rental RV crowd tends to be a hazard to other vehicles.
We encountered a Class A bus in Kings Canyon of at least 35' - used up more than his side of the road.
2017 Forest River Sonoma 280RKS
2018 Silverado 2500 HD 6.0L, 4:10 rear