Originally posted by queenpdog
The bike handles packed gravel nicely, but the tires limit you quite a bit. I hit some deeper gravel over the weekend and it got real sketchy pretty quickly. There aren't a lot of options for the ST's wheel sizes. I know that is not what the bike is built for, but my exploring will always include some dirt.
One of the best features of the Street Triple is the 17" wheels which gives you so many tire options. I believe your Triumph runs a 120/70r-17 up front and a 180/55r-17 in the rear.
So, for gravel road exploration you may want to look at some of the tires that were developed for the Buell and Ducati big tralies that have a 75% road and 25% dirt profile like the Dunlop D616 and the Perelli Scorpion Sync.