Hi. New user to this site. Here's my question. I have an '83 320I. I am putting the original 13"/4 lug steel rims back on the car. I sourced rims in the midwest and most recently, California. The CA rims showed up last week but are wider than the ones from the midwest. 6" wide for one set of two...6 and 3/8" wide for the other set.

#1 - Why is this? I assumed all this rims would be the same...
#2 - They are all 13" rims...will this issue matter when I mount the tires to them (185/75/13)

(This car gets driven less than 5 times a year...150 miles...)

Thank you!