Quote Originally Posted by Roadtrip View Post
It has 32's on it now.. so are you saying to down to a 28?
No sorry I could not see the bike if photos were posted and I was not familiar with it... I assume it was a road style bike with thinner tires. The only thing you could do is go up to 36's but realize the wider the tire, the more "drag" ie friction on the road. It is harder to move wider tires than thin.

That said, 20 miles isn't very much at all. I say before you spend any more money just let alittle air out of tires and ride, ride, ride. Not certain where you pump the tires to but you shouldn't be running anymore than 60 - 80 psi.

I have a friend who had one flat after another. This was mountain biking mind you. She also had difficulty controling her bike. I agreed to fix one of her flats. In checking the air in her other tire I noticed it was pumped to 80 psi. Recommended for mountain biking, especially on California's sandy trails is 30 - 40 psi. She exclaimed but the tires says 80 psi! I showed her it says the maximum is 80 not the recommendation. For road/pavement use 80 psi is OK. Now be careful and don't drop the psi too low... especially for heavier riders. That might result in "pinch flats". I wouldn't go below 60.

If you don't already always ride with a spare tube and tools. Even if you can't change a flat, someone riding by can.