I have a staggered set of Carrera II wheels that are 8J-18 ET50 & 10J-18 ET65. Will these clear the calipers and work on a '01 996 TT? And as importantly what size winter tires will fit these rims? If the fronts are 8"=205mm how wide can they be and still fit? The rears at 10"=254mm can they fit a 295/30 and a 225/40 ?? What is the range for an 8x18 for example 200mm; 225mm 265mm etc? These are for winter tires only