I can confirm that RICOHJPN-W11-001 should burn and read properly on the 4163B. I have used DVD+RW discs with that media code on my 4163B with no problems. The only thing is that mine are Phillips branded not Traxdata. So they should work.
Maybe the discs are defective. I’ve heard some people say that Traxdata discs have variable quality. It could be that you have a batch of discs which aren’t very good. Try burning with some other brand of DVD+RW discs on your drive and see what happens. I’ve used DVD+RW discs which people consider to be really nasty quality stuff (SmartDisc, A10Pro, Sigma) on my 4163B without problems.
You mentioned corrupt files when reading back. Do you mean that if you set your DVD burning software to verify after burning, the disc burns fine but verifying fails?