Paul / Farmer,
Going over the max pressure tends to distort the tires, which can make them out-of-round (depending on how still the walls are). I already tried it... it was awful. But on the other hand, most tire places only fill your tires up to about 75% (which is usually the RECOMMENDED pressure, not the MAX). I had 44 psi tires on my truck, and they were all set to 36 psi from the dealer. I called and asked them, and they told me they never go all the way to the max unless there is a reason for it.
You know what works REALLY good? Try the Summit Racing front drag radials... all the way around. They come on a 4-inch wide rim, and the Rolling Resistance
is almost nothing... and the weight is less than 1/3rd of what my stock tires were. And here's the kicker.... they worked awesome in the snow too!
I'm not sure what the speed rating is, but if they can stop a dragster from almost 300 mph, I'm sure they can stop my little S-10 from 60mph just fine...