Hey everyone. I'm looking at puting some steel rock crawler wheels on my truck. I want the stance on the truck to be a bit wider than stock. What backspacing do I need to order my wheels so the stance becomes wider.

Ive got a 1980 toyota pickup.
thanks
drew  

Less backspacing equals wider stance and less tire under the wheel wells.  

thanks for straightin that out for me.
Just when I thought I understood it I would read somthing different and it would be back to square one.
drew  

Wider spacing also weaken axles load capacity as it places more leverage/strain on axles and front spindles and knuckles which many do not realize.  

yah I had heard the it can put a lot of strain on the axle and other components.
thanks snoman.
drew