here's a good link about the T1-S compared to a couple other tires.
http://www.geocities.com/Motor....html and since nobody reads the content that people take the time to post, here's some cliff notes:
"These tires have a remarkable amount of grip, wet or dry. They have large, v-shaped grooves that allow water to disperse to the outside of the contact patch, preventing hydroplaning. There is also a solid ridge of rubber down the centre of the tread, and large, solid tread blocks at the edges/shoulders of the tread that together resist the squrim normally associated with a tire with such large grooves. These factors, combined with a sticky but long-ish wearing silica tread compound, result in a tire that is great in both wet and dry conditions. There are several other tires on the market that take advantage of a similar "v-shaped groove with solid centre tread block" design, including the Dunlop SP9000, Goodyear Eagle F1, Yokohama AVS Sport, and the Michelin Pilot Sport (all pictured below). However, price-wise, the T1-Ss are typically $20 to $60 less per tire than these other premium name brand models."
you must read this link and save it for future reference. read the reviews:
http://www.1010tires.com/Toyo_....html
Tech info about silica compounds used in Toyo T1-S(among others)
http://www.toyo.com.au/tech_info2.html
And here's some love for Bridgestones and the SO-3, which is a super tire, demonstrated by price.
http://www.miata.net/products/...l#S03