Hi Peter! I'm no expert on modern armor, but I used this technique on the tracks for my Borgward.
https://www.modelersalliance.com/forum/armoured-fury/147207-dragon-borgward-iv-ausf-a?start=24
Paint the tracks the color you want them, then dry brush the pads with a rubber color. Panzer Aces has a Dark Rubber and Light Rubber color that work well, you could also use Tamiya Nato Black. I'm certain Humbrol has colors in that range as well, I just don't recall what color numbers they are. If you want to depict damage, you'll need to add that to the pads and that will be tedious. This method is one I have used, you could try it on your pads. https://www.modelersalliance.com/forum/ian-hill/20904-damaging-rubber-tyred-tank-wheels
Best wishes, hope this helps.