Originally Posted by
biker128pedal
How much clearance do you have now and what is the inside with of your wheels. The 25mm tires may rub.
^ This is what you need to do.
You can look up your inflated widths online, bicyclerollingresistance.com, to see if it will fit.
I personally could care less what pressure you like, the only thing that is important is to make sure it will fit in your frame.
John