Tyre Sizes On Rims?

[Johnney_aussie]

My rears on my skyline are 265's the rims are 18"s i was wondering if they would fit 255 or 245 cause there pretty expensive, it may be hard to give me an answer since i dont know how wide the rims are but usally can you differ the size ?

[nisskid]

it's impossible to reccomend a tyre without knowing the wheel width. maybe if u even took a pic of the tyre on the wheel, i could guess the width and tell u if the smaller sizes would be right.

my thought is the width is a 9.5" or 10" assuming the tyre was chosen by a tyre shop, so a 245 would be fine, bit of a stretch, but not too much, certainly not unsafe.