In the 8 years I have owned the SLK 320 of 2001 vintage it has always seemed that I got the best tire wear by running 30 psi front and back. The sticker in the gas flap says the correct pressure is 30/33 but what I have been running is at least close to that. At a "B" service last week they told me I should be running 44/40 psi which is what they put in the tires. Looking at the tire it appears that 44 is the maximum pressure allowed. Before I let air out of the tires and go back to my "normal" pressure I'm wondering if there is some ideal pressure for maximum tread life without compromising too much on handling?