Guys, being the lazy git I am, I only started to wash my car today since posting in this thread a few days ago.

But it started pouring with rain so I didn't get past the wheels. Tomorrow's sunny so will continue then.
Anyway, I started on the wheels. I still don't have a degreaser but I believe snowfoam can help clean tyres and I have snowfoam. So I sprayed the tyres with snowfoam, let it sit a few minutes and then scrubbed and rinsed. There's a few areas of browning on the rubber. I believe I'm meant to repeat the process until there's no more browning. Just wondering if you think I'm wasting my time with snowfoam on tyres or carry on with the process?
Now for the alloys. I thought all the black grime between the spokes would just wash away easily but I was so wrong. I sprayed alloy wheel cleaner on but it did nothing to remove this black heavy dirt build up. It's certainly not the best alloy cleaner, but I don't even think bilt hamber would remove it.
It feels textured and I could barely scrape it off with my fingers. I decided to use oven gel and that worked almost instantly to loosen it. I was worried it was rust. I'm guessing it's years of carbon/brake dust deposit that has caked on? I bought the car in April and this is its first wash as it really hasn't been driven much.
This is what I was trying to get off,
This is it now, though I haven't finished the wheels yet.
