Just a note: The armadillos are heavier tires. You can do way better. The armadillos are around 450 grams each, or even more for the wider sizes! That's a whole pound per tire! (They are called "armadillo" because they are armored.) You should be able to get tires that weigh less than 200 grams each, and this will make a HUGE difference. Be sure to get lightweight tubes (less than 75 grams each) too. The basic tubes typically weigh in at 100-120 grams, while the "Turbo" models are around 65 grams each. Believe me, you can feel every gram of difference in tube+tire weight.