Thanks for the replies. I swapped the wheels and I think they look great. What is kind of sticking with me is how this Tech was so just so adamant and with so much conviction. Even if he is wrong he believes fervently that this is the wrong thing to do. For me as a rule in life regardless when someone in the know is so emphatic about something I try to consider it more closely rather than just fluffing it off. He said they covered this in certain detail at Toyota Tech School or training or what ever and between swapping wheels from different sizes to different models to different trim levels ect and they Toyota strongly discourages this because of non published implications or what ever. Thanks for all the input. I feel like I have more info now but he was pretty convincing. He certainly was sincere and serious enough about it to make me wonder.
Thanks
You should tell him to discuss this with his co-workers. I'm sure they'll help him understand that there is no problem whatsoever in your wheel/tire swap. He's probably just confused or didn't fully understand his training. If anything, you'll help the guy out in the future if he should come across someone who asks him the same question.