Be careful to get the correct offset (35-38) with the larger wheels especially if you will be upgrading your brakes. I have gone from 17" to 18" Enkei RPF1 wheels that look good and are light. They are relatively inexpensive. If you do not plan to drive a lot of miles the Toyo RA1s have good grip but are R compound so they will wear faster. Tire Rack has some good comparison grids for tires if you need longer tire life.