Originally Posted by
corwin1968
I'm measuring the pressure with a pump-mounted gauge. I kept my 7.2 FX 700 x 35's at 80 and they were fine. These 700 x 35's at 75 feel flat when I turn a sharp corner. It even sounds like I'm turning a corner on a flat! I'm hoping it's just that they are really cheap tires. After I get the money for an overhaul, I'm going to save for some good tires and hopefully this won't be an issue.
75 PSI should feel just fine, even in the cheapest of tires. You should confirm it is the tires causing this sensation before you spend any money.
Cheap tires are generally more rigid than expensive performance tires - it is the energy required to flex the rigid casing that gives higher rolling resistance. I don't know if this difference will actually make the tire feel stiffer when riding... I'm inclined to think not much difference.
Two questions:
1. How much do you weigh?
2. how wide are the rims on which the 35mm wide tires are mounted? If the tires are too wide for the rims then they form an 'omega' shape that is more prone to squirm under side loads.