I've measured my suspension heights and something looks wrong.

Bump stop to axle bracket:

Front driver 3.8 inches
Front passenger 3.9 inches
Rear driver 4.8 inches
Rear passenger 4.9 inches

The RAVE manual says that the rear (with SLS/air springs) should be 2.4 inches for the bump stop clearance. Mine is double that!

But the hub to center wheel arch from the RAVE manual is close to mine at: 19.7 inches (+/- 0.6 inches).

My hub center to wheel arch (the plastic part):

Front driver: 19.0 inches
Front passenger: 19.4 inches
Rear driver: 18.5 inches
Rear passenger: 18.7 inches

So all of that looks within spec.


What could have happened here with the bump stop measurements?

Did I measure wrong? From the bump stop’s metal bracket to the axle below it, right?

I've got:

• Factory shocks, coils, airbags, ACE, etc. (HSE 2003 V8 Discovery 2)
• I'm running tyres about 1-1.5 inches bigger than stock (265/60/18)
• No bullbar or accessories

 

stock bump stops won't get touched. I mentioned that in your other thread. Go ahead and pull the shocks and cycle the axles to see for yourself. That's the most accurate way to confirm sizes.

 

Thanks mate!

Question here is: why is the bump stop distance 2x when I measure it?

Stock bags and coils at the front. Am I measuring wrong?

 

Honestly I don't measure it from ride height. The only way to get accurate measurements is to pull the shocks and cycle the suspension up and down on each side. You will see the exact limits of the springs/bags. Then you can take shock measurements from ride height and calculate your correct bump sizes. I don't know of a way around this. Tires will have zero affect on this unless they come in contact with something before the spring is fully compressed (which in your case is unlikely).

 

I have a 2 inch lift. I purchased these extended bump stops. They are 90mm high (3.54 inches).

https://www.simmonites.com/shop/susp...covery-1-copy/

I have not installed them yet. I hope there isn't any problem.

 

Kind of a waste of money imo for under a 2-3" lift. No one is blowing out shocks on these things bc of improper bump stops at stock height or up to 3" of lift.

 

It's a failsafe. There was a building in New York with a pressure relief exit valve from 1950s that blew and saved the system. The part isn't needed until it is.

I have SLS Air Springs. My car was 60 days on the ocean. Because of the waves my Air Springs blew. The car arrived down. The Bump stops saved the frame. I had to buy new ones. . but am a little worried about them hitting the frame on big dips . .

 

i have the same fear! How do you calculate bump stop height needed to protect shocks and frame?

I was planning to lift rear only by +20mm from stock

 

I might not have SLS on my rovers but the method I described will give you exactly what you need. Lots of good info on suspension set up on youtube if willing to look for it.

 

need to pull shocks for that though? front is tricky