Seems more logical to me that tire size should dictate these things. In all the adds for shocks they tell me what size I should get dependent on my lift height........well if I was running a 20 inch tire on my 6 inch lift I am going to need alot of up travel to stuff my wheels and tires, inversely if I am running 40 inch tires on my 3 inch lift my shock body and bump stop can be far longer since my tire will slam into my fender much much sooner. This seems bass ackwards to me. Feel free to correct me if I am wrong......


If the industry moved over to measuring shock body length and bump stop length to what size tire and fenders we had we could fine tune our shit alot more efficiently IMO.

 

Because you don't want your springs to fall out when you've over travelled extension on your say 2.5" BB lift and 6 inch lift shocks....say bye to your springs as they fall off the perch. That's one reason...also, with say 3" springs you'll want to reduce a certain amount of compression regardless of tire size so as not to completely compress and
buckle those springs

 

Umm, I disagree. I want the extra articulation, there are clips and guides that make it perfectly fine for your spring to leave it's perch momentarily and using the tire size as a benchmark would dictate bumpstop and shock body length and prevent over compressing and ruining the shock.

 

Look up planman's posts, he explains it very well.

 

Umm....no.

 

Uptravel is irrelevant here. The coil will stack, stopping any further uptravel, and you'll still have a foot of clearance between the tire and fender. (and depending on which coil/shock, possibly damaging them both...)


Completely remove the fenders and get busy with a sawzall. The extended bumpstop is there for exactly this reason - to keep the tire off the fender.

You've already hit on the two main reasons for bumpstops. Keep the coils/shocks from over-compressing and possibly damaging them, and keep the tires from ripping the fenders off. I don't see what issue you are having with this?

'Bumpstop height = lift height' is a general rule of thumb, but is certainly open to interpretation and personal preference.
Trim the fenders, and run less bumpstop.
Coils are designed to go full solid, run less bumpstop.
Use limiting straps/spring retainers/etc, and run longer shocks.

They can't possibly go into detail on every single variation for every single vehicle for every single persons individual situation. So we're back to a general rule of thumb...

 

quality post river

 

Alll I was really trying to say is that using tire size as a rule of thumb seems like a more logical rule of thumb than lift height which has more variables.....

This thread is really more of a gripe thread, LOL

I am not a expert on all this stuff yet and still have plenty of room to learn but it just seems like as I plan my lift it always comes back to " what size tires am I going to run?"

 

Bump stop height=lift height? Can you expand? Does that mean if I lift 4 inches I should extend my stops 4 inches?

 

I use the WAEG method


Wild Ass Estimated Guess........ It's worked so far, again I say, see planman.