first of all i believe the neuspeed sports you are referring to are 1.75 front and 1.5 rear.. anyway, i think that would be a good drop. the rim/tire size doesnt really matter as long as you get the correct sizes. if you do it right, no matter what wheel/tire size you get, the total wheel/tire diameter will be the same as stock, so your speedometer will not read incorrectly. i have an eibach pro kit on my car, which drops about 1.3 (closer to 1.5). its a tight 2 finger gap all the way around. if i could make it out of my driveway with sportlines (1.8) but as you can see i'm extremely close to scraping as it is. HTH