And what kind of tires are on your Z now? It all depends on how serious you want to get about both types of driving. You could spend $300 on a drag race set-up and drive HPDEs on your street tires; buy 17" stock Nissan/Infiniti wheels for cheap and put 245/40/17 Victoracer tires on them ($1000 total or less); or go all out with 17x9.5x4 CCWs with 295 Hoosier tires for $5k. Oh, or anywhere in between. ;)
SS
____________________________________________________ We face formidable challenges. I am not afraid of them. I am prepared for them.