The tire pressure spec is 36 PSI front and 42 PSI rear (cold). I usually run them at 34 PSI front and 40 PSI rear

I wouldn't run any less than 36 in the rear. It might help traction a bit, but in most cases the bike's front wheel will probably come off the ground before the rear tire will break loose.

 

Way to high... I have the 09 with replacement Bridgestone S21 front and back and I run 34psi at the rear and 32psi on the front... and still get great mileage out of both and the grip with the tires and psi I run is just fantastic !

 

What he said. Using Pirelli Angel GT. Front lasted 14000 miles and the rear about 11000.

 

There are just as many opinions on tire pressure as there are members on this forum. Possibly more.

I run 36R/34F on the street. I don't track the bike.

 

That's exactly what I run on the street!

I honestly don't ever pay attention to the sticker on the bike, because I think they put those on there for liability reasons. If it says 36psi, and you load your bike up with luggage and a passenger and trek across the desert at 90 mph in July, and your tire blows out...

So they cover themselves by printing basically the maximum allowable pressure on the sticker. 42psi is ridiculously high for a solo rider on a standard bike...

 

Check with the tire mfr website and get their recommendations for your bike. Make sure you are NOT using pressures for max load rating (which is what op cited) and then you can adjust about 10% or so for desired traction on the street and maybe a little less pressure still for track duty.

Everyone is different in what feel they want from the tires.

 

32 front 36 rear cold pressure.... i feel super sport tires give much better feedback once they warm and the pressure comes up.

 

I'm with Racerman....32F/36R cold for street riding. For the track I drop to 31F/30R cold.