Pretty cool watching someone else chop. This is just basics, but still there are things that differ from your style and my own, whilst others are exactly the same, which is fun to watch cause you feel like, yup that's me doing stuff... no wait it isn't at all! Hehe.
One thing I noticed, which I have stopped using quite recently, is that you use the pen-tool and cut away parts of the new tyre. I now days instead use a layermask. This gives you a lot more agility later if you decide that you need to change the tyre/rim further cause you still have the material underneath the mask. Once you have cut it away it's gone sort of!
Maybe cut here just for this? But I do encourage use of layermasks instead
That shadowdrawing tool (is it the dodge and burn tool?) looks nice. I havn't explored it at all, but seeing this I realise I have been missing something. Usually brush those types of shadows and similar instead, which has it's drawback. But with added layereffects you usually get the same end result, but with some more work.
Other then putting the back rim on out of perspective I really enjoyed this
Nice work, and I know it was a quicky so you would have fixed it later. Just an observation sort of
Since you are taking requests, a bg change with some new refs would be nice to see how you. Perhaps if you did like the cooking shows with like: "This will take 52 hours, but fortunantly I have already prepared a little here!" could possibly work?
Nice video, and good initiative! Great stuff for beginners and even some intermediates.
Cheers! *big applaude*
it's just how i've grown accustomed to work. Thanks for the insightful comment as usual 
