This spray came highly recommended to me. The first time I read about it was on the Wirecutter blog. I like to keep a scrub brush and magic eraser handy for this job.
If you’re frequently cleaning your car, you don’t want a detergent that will strip the paint. I have reviewed other products for heavy staining.
The Eagle One A2Z foam will facilitate your scrubbing and help to restore the black of your tires. If go through a lot of product, you may consider the 24 oz. spray. You can also get it in the 64 oz. jug.