xkr suspension modification
 

hi all ,

im thinking of lower the rear of my 2002 xkr a little by fitting shorter springs while i have the rear axle out as im changing my diff.

the car is fitted with the active damping system an im wondering if lowing it will have any advers effects because of this. all help apricated. thanks

The CATS System does not affect the Ride Height with Standard or Lowering Springs.

I Installed Mina Lowering Springs in my car with excellent results:

https://www.jaguarforums.com/forum/x...omplete-54377/

thats exactly what im going for. thanks mate

Paul,

Before I go any further - no criticism implied here, just seeking information on something I don't understand.

The ride height of the XK8 is already low:

1. why would you want to lower it?
2. rear only or both front and rear?
3. excellent results - what's the improvement?

I'm assuming 'Lowering Springs' reduce the ground clearance which may not be the case.

Graham

1. Actually the Ride Height (at least of US Cars) is NOT Low, as seen in the "Before" pic of my car.

2. Rear only. The Front (at least in my car) was Fine with the Standard Springs.

3. Improvement: The Appearance!!

The Ground Clearance is reduced only slightly.

Of course, it now uses more gas since it's not going "Down Hill" all the time.:icon_banana:

If you are saying this because your XK already seems low then I would think it has already been lowered or you have a problem with your suspension, the XK always looks like it is up on stilts

Paul,

Now I get it. The tyre radius outer edge has an even and smaller gap to the wheelarch. The whole car sits more level on the ground instead of appearing to be up at the back.

Had my 2001 XK8 for five years and never noticed that :icon_doh:

Thanks,
Graham

No - I'm saying it because I hadn't noticed!

Graham

One unexpected benefit I enjoyed after lowering just the rear was that the front seemed to rise just a touch (at least to the eye), so that it looked balanced with the rear in a way that I didn't expect. Before it had always looked scrunched down a bit, maybe the new upper shock mounts contributed as well, but it seemed to happen after the new springs were installed. Better weight distribution?

More like weight loss - you've just cut two great big holes in the bonnet :icon_biggrin:

I'll try to redeem myself from my dreadful ignorance on the benefits of Lowering Springs.

If you jack the rear of the car up, the front undertray gets a lot closer to the ground so if you lower the rear, the front is going to rise.

I'm fascinated with comparing the 'before' and 'after' photos of Paul's car and it definitely looks to be slightly higher at the front in the 'after' photo.

Graham

That 'splains it then!

It's actually not higher at the Front.

The Clearance between the Tire and the Wheel Arch IS greater at the Front.

However, the Front Tires have a slightly smaller diameter than the Rears. (245/45 Front vs 255/45 Rear)

The Rear Wheel Arch is actually 1/4" Higher off the Ground than the Front Arch.

the front is fine for my im running the detriots on 255/35/20s so the arch gap at the fron is minimal but the rear looks very jacked up on stock springs and makes the massive wheel look a bit lost in the arch so it could do with dropping 30mm