Gary, I have a 2000 328i with sport package/stock susp. I just bought 18x8.5 inch rims. Now I need tires. Should I go with a 225/40/18 set up all around? Or should I go 235/40/18 all around or 225 in front and 235 in back? What are the advantages and disadvantages of these setups? Will the wider tires look any different? Thanks.