You may be able to push it a few hundred rpm but this engine WILL over power the brakes rather abruptly. I find 1500 is where you want to be and still concentrate on the tree without worrying about lurching and red lighting. My greatest success (less terrible) on street tires was at 28 psi passenger and 30 driver side. I never, in 2 years, had a great pass on street tires. Truth on the internet hurts. (i.e. I sucked for 2 years)

Les