Both sets were 235/40 18 Dunlops. 1st set were SP sport 8000's I think, they sucked. $135 a piece and made terrible road roar on the freeway. This time around I decided to spend whatever it would take to get grip and quiet. Ended up spending LESS on far superior tires.....Dunlop Super Sport Race tires. Read some very convincing feedback from some autocrossers. Downside is no treadwear warranty, only rated for 6k miles. But I am very easy on my tires, I am positive I can make them last 12-15k. Tirerack had them on sale in that size for $120 each, quiet and grip if i want it, perfect. Tirerack rocks.