I mainly race 1/4 mile but sometimes tracks run 1/8 mile due to weather conditions, 1/8 mile is fine but I am shifting third just before the 1/8 mile mark, you gotta think about the stripe quick! How do I know? I ran 1/8 mile pro dial ( 500 pro tree) yesterday and screwed up the stripe. I don`t mind it my car works well for 1/8 mile since it 60fts well with out a lot of mph.