Just looked up the Sumitomo HTR Z (215/45 VR-17), they are identicle to the Dunlop SP Sport D40M2 (215/45 VR-17) and cost $3/tire less. If this was already brought up, sorry! BTW, looking them up because i'm thinking about gettin Borbet C2T replica rims in 17x7.5 size for the CQ. -Eric Ferguson