I have just replaced my factory F1 run-flats with Dunlop SportMaxx non-run-flat tires. I have a question about the correct tire pressure I should use on the new tires. The door jamb calls for 30lbs on the factory run-flats. This seems too low, especially considering the extreme wear noticed on my original front tires on the edges. The center of the tires were fine, while the edges wore down to thread in less than 20k miles. Amazingly the rear tires still have quite a bit of life considering how soft the F1's are by nature. I just had my alignment done by one of the best independent alignment men in the area and he suggested closer to 40lbs, which seems a bit high, while my new Dunlops show a max of 50lbs per tire. Any ideas on a good in between pressure that will maximize tire life while not killing ride performance??