clear1, I went with 19's just because of the reasons MTurboPower3 wrote. The tires I went with were Michelin Pilot Sports ps-2 35/225/19 in the front and 30/265/19 in the rear. If I had to do it over again, I would get 30/235/19 in the front though and I would probably go with Kumho because it has a greater treadwear. These tires suck. The spacers cost me like $10-15 for a set of 4 at Pep Boys. The only thing I had to do was take off the tire and twist and spacer on the bottom and top of the spring. I also got a hammer and banged the s**t out of it to make sure the spacers were in. I have had them on my ride for 6 months now and no problems. Just use a little W-40 on them every few months otherwise they will start to squeak. Let me know how it turns out for you.