Subject: RE: CO2 Inflator I use big air on my MTN bike tires. Each can fills multiple tires to almost 40psi...the cans are high volume not pressure. If Im on the road, I still have to pump the tube up another 15-20psi for a faster ride, not fun with a minipump.... The tubes expand when filled, thats why they have a size range. Make sure the tube is in the range of your tire and your good to go. I picked up a spare tube from my LBS that was exactly sized for my tires. For the same price I picked up 4 more from Nashbar that also fit my tire. |