Yes and the closer you get to maximum pressure, the more it seems like your riding on stone tires, there is supposed to be a little deflection in a pneumatic tire, if there isn't then you lose the air suspension from the tire, which means that every imperfection in the road surface is transmitted directly to the rider. This is why we ended up replacing $200 steel and $300 aluminum frames, with $1000 CF frames, attempting to get away from the fact that we are riding on stone hard tires. Run the tires a little softer, I remember 27" straight sided rims, where you could blow a tire off the rim at 90PSI. Personally I prefer a wider tire at a little bit lower pressure....