All the Supermoto guys cut the tires for that reason... I used to cut my Metzeler Racetec when i was racing in Supermoto... It's a very easy job to do if you have the right tool... You mark the tire fisrt with a choke and a hand made spacer so the dstances between the grooves are the same and then start to cut it... there are many different "cut noses" to choose from depending how big or small you want to make the grooves... You can also even write your own name on the tire...!!!!
