Yoko AVS is excellent choice. I used AVS-Intermediates (NLA) on my Z last year with excellent results. They survived for a year including two track days and several autocrosses plus daily driving. Soon to order new set of AVS-ES100's.

If you are putting these wide tires on stock 15x4 rims, you will need to keep in mind that stock rims are way narrower than recommended for these tires. Look up the specs at tirerack.com (tire-rack.com ?). When the rim is narrower than ideal, it will tend to curl the tread convex, so you will need to counteract with lower air pressure. You also need lower air pressure as someone else recently noted to assure improved contact patch and proper treadwear.

You may want to look into alternative rims or have the stock rims modified as recommended by IPS catalog - have a wheel shop weld in a section to make the rim wider.

Later,
Al