I don't agree, I think NGK is one of the best plugs around. The tires the GSR came with are good tires for the car's performance. It's not an NSX or something. Michy's are good and the tires that came on the GSR/SI are pretty soft for a all season tire. Mine only lasted about 20k with regular rotations and I'm not a tire spinner. Sure it sucks on wet surfaces but it's made to drive in different conditions. If it was more high end it would have high end tires. Sure copper in theory might work better but it doesn't last like platinum and ppl aren't willing to pay for plugs every 30k anymore.