3 sets = 12 new Conti’s On a pallet... heavily discounted end-of-year sale... Internet isn’t totally forthcoming on actual sizings so I just committed to my own research. 1. 225 45 18 set 2. 265 640 18 set 3. 305 640 18 set The Porsche GT4 race teams use 18x9 front wheels and 18x10 rear wheels and use a staffer set up of 265/305 respectively.