Outer Limits 4x4 Board

ive got 15 inch sunraysias on my 86 hilux and i cant find the size stamped anywhere on the wheel. im about to put 33s underneath but need to know what size wheels ive got so i know if i have to buy rims. how do i accurately measure wheel size. ive been told that 15x8 will be fine for 33x12.5x15 mtrs. can anyone help me

33s will fit no worries on 15x8. they can also be squeezed on 15x7 if you have too.
Unfortunatly i am not sure on where to measure them from, but if the have a deep ofsety, prob 8. Most luxs however have 15x7s on them now.
if you have a photo of the rim, post it up and someone can prb tell just by looking at it if its 7" or 8"

Yeah post up a pic sometimes the rim size can be stamped on the outside near valve stem or inside or back of of rim and then some can be stamped on the actual inside where the tyre covers so you need the tyres off to tell.