2006 325i Sport

[noodulz]

Hey guys, i need help finding the size/dimensions of my front tires (specifically front passenger rim). I'm looking to buy a factory/stock tire to replace the one i have on right now, apparently its cracked. anyways I really have no clue what im suppose to be looking for. i measured the wheel and its 17''. i have the part number for it if it helps: (EL001 PART NUMBER 36-11-6-775-599)

i did some research already and i found this: http://www.finishlinewheels.com/BMW/3+SERIES/2006/A-59584U20/
i feel like this is my rim but im still unsure

also, is buying online my best option or should i look locally for one? i also rather save money so a used/refurbish one is fine by me.

another question i had is when i buy new tires, can i buy 4 of the same tires? or for my car do i need to buy two sets, a pair for the front and a pair for the rear tires?

but yeah any help would be much appreciated.

thanks in advance

[ABE1]

I also have a 2006 325i Sport. I replaced all four tires today. Front tires are 245 R40 17 on the front and 255 R45 17 on the rear. Got rid of the run flat tires that originally on the car! By the way I bought Bridgestone brand tire...NO ROAD NOISE ANYMORE..