So I am in the process of getting a 2006 E63 with a 5.5L stroker on methanol. My last set up was a bolt on e63 and I am in Southern California so for the rear I had 20” forgestar f14’s and ran a 285/35/20 ToyoR888R. This time around I want to go wider and I am debating between a ToyoR888r 305/35/20 or 315/30/20 or possibly a Hoosier R7 305/30/20.
https://tiresize.com/tires/Hoosier/R7-305-30R20.htm
I don’t know anything about offsides and bore and diameter, etc. I’m currently looking at some used vorsteiner and other wheels but this time around I want to get the right fit as the Forgestars needed spacers and I had to roll the fenders so I want to buy the correct side at this time.
I don't know if I should get a 20x10.5 or 20x11,etc.. for the rear and I don't know anything about what an offset means. Not sure what bolt pattern (5x120? What bore?) But need to know the above question and offset like +22 in front and +34 in rear or what "+" #'s to look for.
If someone can give me the correct numbers it would be greatly appreciated. Thank you