I would like to know what the offset is on a stock 13” rim. I bought a set of tires, 215/50/13, but need a set of rims that are 6 to 7 ½ inches wide. I would like to find a set of 4x110 13x7.0 rims but I don’t know what offset the stock rims are or whether I need the same with a wider wheel.

Searching didn't yield much. I saw a couple of guys that appeared to be guessing at around 20 to 25 mm. The wheel is supposed to be marked but I didn't see anything on it.