[frak]

Can somebody tell me how to work out the additional bump stop length i need in the back for a lwb vit running 30" tires?

Ie to stop hitting the outside guards. Not sure given compression on them via the tapers.

[Red89]

Flex it up till they just start to make contact, measure the gap between the current bumpstop and contact point on the diff add an extra 20ish mm and that's the rough length you need

[J--A--C--K]

If your hitting the outside of the guard maybe your rim offset is a bit much , I thought 30's tucked pretty well on the vits