Thats why car manufacturers dont use them.no-one
they're all a BAD idea
unless you like changing wheel bearings that is....
Paddocks.
and they int a bad idea, dunt listen to all the rubbish about eating wheel bearings and geometry and **** like that, they are fine - far less damaging than the bigger wheels they emulate!
People put wheels with different dish depths on their landys all the time, we are talking about 2cm with spacers which is much less than the difference between the depth of say disco alloys and wolf wheels, so i would say it depends on the wheels you got on there already. People won't like em on here coz they are considered unnecessary bling but that is irrelevant to the question which is where he should get em!Increasing the offset of the wheel does alter the steering geometry. Have a read of the kingpin inclination bit on this page if you don't believe me: Car Suspension, The basics
Because of the kingpin inclination, as the steering is turned away from the straight ahead position the axle rises a small amount, and what goes up wants to come back down, so the steering naturally wants to settle back to the straight ahead position - this is the self centring effect. Offsetting the wheels exaggerates this.
In real life though and on a Land-Rover I doubt offset wheels would have much of an effect on the steering.