hey, i just purchased some 17's and had the tires mounted and now I'm unsure of what is the proper psi. for the stock wheels it is 32 psi but do I use the same for the 17's, or is it different depending on wheel size? i figured the place that mounted them would inflate them to the correct psi, but some of the wheels had different psi's, so i figured they are not correct. any help appreciated. thanks