2 or 4 wheel alignment

[PaHumBug]

What's the difference? When do you know you need a 4 wheel over a 2 wheel?
Thanks guys

[2010_5thgen]

ive only had 4 wheel allignments done on my camaro for track purposes. never had them done on any of my trucks.you would have to really be abusing your truck to need a 4 wheel allignment.

[guruerror]

Here's a decent article explaining the differences in alignments. http://www.tirerack.com/tires/tirete...e.jsp?techid=4
Looks like a 'Thrust Angle' alignment is what you'd be looking at for the rear.

But I agree with 2010_5thgen...I think you'd really need to beat your truck up before that would be necessary; or have had some sort of side impact near the rear.

[2010_5thgen]

or if your messing with suspension components. thats one of the reasons i alligned all 4 last year. i did a bunch of rear suspension mods.

[PaHumBug]

Thanks guys.