wheels and tyres

Hi I'm new to here and my disco 300tdi is new to me! I'm trying to figure out tyre sizes..... currently has landrover alloys and tyres need replacing.... someone I know has some steel modular 15x10 wheels for sale good price..... will they fit straight on the disco (no lift or arches trimmed) without rubbing and with what tyre
Size ? I'm thinking bfg a/t ko2..... but what size? I'm trying to figure it out but I just can't get my head round it! Cheers !

15x10 seems a bit wide and a waste if you aren't fitting fairly large tyres to it.
Having no lift you'll be limited to 31'' tyres - 31/10.5/15.
But you will need to do the Camel chop (look it up).

If you do a 2'' lift you'll open up even more options.

Cheers

Ok so I've done the camel cut.... to accommodate larger tyres at sum point.... I won't get the the 10x15 rims.... I'll stick with the 16 inch landrover alloys and either get 245/70r16 or 245/75r16.... Cheers for ur help!