Fitted new tyres to the Bulldog, went for an increased rear with a 180/55 and kept the front to the factory size. The 180 section rear looks great and fits with no clearance issues that I believe the 190 section can have.
http://img.photobucket.com/albums/v15/thejudderman/th_Bike%20Tyre.png
http://img.photobucket.com/albums/v15/thejudderman/th_Bike%20Tyre%202.png
The speedo is actually reading much more accurately, while the tyres themselves are fantastic. Excellent grip in dry and wet weather, give plenty of feedback compared to my Bridgestone 021 too.
I used to really like my Bridgestone's when I bought them for my last bike, so I think it might be the age of the tyres I took off this bike that were past the best.