hey guys...i did some searches but i still have a question...

so i bent one of my wheels on my car...i have 18 inch by 7.5 inch rims... and the wheels i have are discontinued...so i was wondering if 18 by 8 rims would fit on the car, but with stock suspension...no drop or anything...the dealer and this tire shop (victoria tire) said they wouldn't fit for some reason... let me know guys...appreciate the help