i have a 05 coupe with sport tuned suspension with 19's and im looking at the A.Z.A. Z-10 wheels..but the sizes are 18x8.5. if i got these wheels all around just that size is it going to affect anything on the car.. like the speed reading, suspension, or what not.. the 19's are a pain in the a s s .. because i can't find winter tires for them so i'm down grading the size to 19's to get the toyo proxes 4 the all season tire.. i was wondering if anyone could help me out here.. i don't want to buy them and have them wheels+tires mess up my car in some way.