Okay I guess they were right. I must hav eflew through the calculations last time I did the conversions. Wheel & tire diameter with 195/70R-14 is 628.6mm, 215/45R-17 is 625.3mm, and 225/45R-17 is 634.3mm. But both fall within the acceptable 2% limit I was told to keep speedo accurate, which comes out to +/-12.57mm. The 215s are 3.3mm undersized compaired to stock and the 225 are 5.7mm over stock. So for me Wider is better.
Firefly: Mal: You don't know me, son, so let me put this to you plainly: If I ever kill you, you'll be awake. You'll be facing me. And you'll be armed.