The P&S Off Road Mud Buster All Around Cleaner is from their Off Road line and is a great APC. However, it can also be used via foam cannon, which is GREAT for heavily soiled vehicles. Not only does it allow for the cleaner to get I more places, but you can do it much faster and more efficiently than hand spraying.
Then you can use a brush like the TriGrip Brush to agitate prior to rinsing.
Perfect for cleaning wheels, wheel wells and other contaminated areas. As well as a great pre-treatment before you wash with shampoo to help, breakdown the contamination before you start washing. You can see the product at work on these heavy soiled off road wheels. It is designed to work against dirt instead of brake dust, so it breaks down that dirt very well.
Works great for tires as well, pulling out a ton of dirt on the first pass and rinsing off very easily.
A huge plus is the pleasant smell, like bubblegum, is much better to work with that some other cleaners of the same cleaning level.
It states it leaves behind a rust inhibitor, which is hard to test but a great addition if so.
Of the P&S Off Road line, this is the product I would recommend the most. Super versatile, works great, smells amazing and well-priced.