If you want something stronger, you can get megs hot rims wheel cleaner from halfrauds. Ideally dilute down to 1:4 but I've used it neat without any issues. Just don't leave it on too long. Apply to the wheels and use a swissvax-style brush to agititate the cleaner. Once rinsed off, you can shampoo them to remove any remaining wheel cleaner.
Then use a clay kit (again megs, from halfrauds) and use a wheel sealant.