Hi All,

Does the Silverstone coupe have different suspension parts vs the normal adaptive r-performance coupes?

From my understanding is the car rides 10mm lower than the stock XKR's. Does this mean the Silverstone came with different springs? I don't notice a difference in part numbers for the springs or shock absorbers.

Do these cars have a different alignment setting in the computer?

Thanks for your help.

 

I believe they are the same, as far as I know the main difference other than badging is the interior the Silverstone was different than the XKR in that respect, otherwise should be the same.

 

"R features" cars which l believe would include the silverstone have different part number for springs than other adaptive suspension cars. What paint colour swipes are on springs (should be pink/purple).
The R features equipped cars sit 10-15mm lower.
edit.
The handling performance pack fitted to silverstones and some other cars included different springs, shocks, adaptive damping module, steering module and reduced diameter rear bar.

 

 

Reading this makes me wonder why i dont see many posts about folks chassing after the Silverstone springs mentioned above.

guess I always default to: higher performance is better.

OTOH, I once started a discussion about CATS and tried to get a handle on what I'm missi g with the normal suspension. To my surprise the net net of the feedback was, it really doesn't make a very big difference, especially considering the cost of replacement shocks.

we get questions about, and we recommend renewing the springs, all the time. Would someone like me, who drives his GT like its a sports car (don't laugh, I am just making the best of what I've got), see much of a difference with these springs?

might be hard to answer, but maybe someone knows. I don't think we analized the return rate of these Silverstone springs , we just noted the size I'd 10mm less. IOW, are they the same springs, just shorter?

thanks for your thoughts.

John

 

I believe that, unless your are a professional race car driver, you would not be able to identify which parts were in your car if you performed a blind test.

It's all marketing hype for the egos of high end car buyers.

Just paint some pink/purple stripes on your current springs. Instant Silverstone.

 

 

I'm new to owning a Silverstone, and Michigan roads are bad, at best. Mine bottoms out and rubs the liners when hitting bumps at freeway speeds, and has Yokahama replacement tires, same exact metric size as the stock Pirelli's. I've rubbed the fender (damaged) turning left into driveways from the tread of the tire hitting the inner edge of the fender (now bent). I'm just guessing, I'm looking at replacement shocks and coil springs.....I sure as hell don't want the front end lower. Thoughts?

 

To start, you need new front upper shock mounts.You lose about an inch when those are shot, which it sounds like they are. While you are in there, replacing the shocks and the springs is advisable if your wallet allows it. Buy the polyurethane ones from welsh.

https://www.welshent.com/Upper-Shock...ir-P26376.aspx

 

Not sure if any difference between Silverstone and xkr but measure from wheel center to the apex of the wheel arch. This should be about 15.5 inches give or take. Id you are at that springs are good. If your pocket book allows, then get a set of replacement dampers and you'll be okay

 

Silverstone will be fitted with handling package which will have it 10mm lower than normal xkr.

 

For the past 7 years I've been finding out what parts are different for our Silverstone/R Perf cars. This is what I've found:

Shocks
Springs
Front Swaybar (bushings as well)
Rear Swaybar (bushings as well)
Steering rack (bushings as well)

I feel like I'm missing a few more for the front suspension differences, I'll come back if I am.

Still a learning-in-progress - fact being I just found out the Rear Hub Carrier has an R' Perf as well? Didn't know that. Looks like the Front Vertical Link has something different for the R package as well... SNG catalog is pretty helpful with seeing what's different for this package.

 

Do you have part numbers for these parts?

Thanks.

 

I am interested in the part numbers too; if they are handy?

 

Sure thing - give me a little time to compile them for you guys.

 

Some of these you are going to need to use the SNG catalog to better see it in proper layout

1. Rear anti roll bar
Standard MJA3500DF
'R' performance MNA3500DA

Anti roll bar bush
Standard MJA3502DD
'R' performance CBC4901


Front anti roll bar
Standard MJA2100DH
'R' performance MXD2100AA

Anti roll bar bush
Standard MJA2102CE
'R' performance MXD2102AA


Hub carrier
Standard
RH MJA3290AA
LH MJA3291AA
R-performance
RH MXD3290AA
LH MXD3291AA


Rack mounting bush
(to VIN 024686)
Driver’s side MNC3953AC
Passenger’s side MNC3953BC
(from VIN 024687)
Standard
Driver’s side MJB3953AA
Passenger’s side MJB3953BA
'R' performance
Driver’s side MXD3953AA
Passenger’s side MXD3953BA

Steering rack, c/w pipes
4.0 Litre supercharged
RHD (re-manufactured) MJC3900ACE
LHD (re-manufactured) MJC3901ACE
4.0 Litre & 4.2 Litre non supercharged
RHD (re-manufactured)
(to VIN 018107) MJA3900ADE
(from VIN 018108 to 031302) MNC3900BCE
(from VIN 031303) MJC3900ACE
LHD (re-manufactured)
(to VIN 018107) MJA3901ADE
(from VIN 018108 to 031302) MNC3901BCE
(from VIN 031303) MJC3901ACE
'R' performance
RHD (re-manufactured) MXD3900BBE
LHD (re-manufactured) MXD3901ABE

Rear road spring kit
Adaptive control damping
(to VIN 019724) JLM20190
(from VIN 019725) JLM20589
Standard suspension JLM12342
'R' performance
(from VIN A00083) JLM21278
(from VIN A30645)
Coupe , not R-performance JLM20589
Convertible, not R-performance JLM12342

Suspension damper assembly, rear
(Adaptive control damping)
Supersports(to VIN A30644) MJB3540EC 2
'R' performance (to VIN A30644) MXD3540AC
Above requires adaptor harness: LJG3075AB
(from VIN A30645)
Standard suspension MJB3540EC
'R' performance MXD3540AC

Road spring kit, front
(to VIN 042775)
4.0 Litre supercharged
Adaptive control damping
Convertible JLM20706
Coupe JLM20689
4.0 Litre non supercharged
Convertible
Non adaptive damping JLM20712
Coupe
Adaptive control damping
(to VIN 014439) JLM20152
(from VIN 014440 to 031302) JLM20410
(from VIN 031303) JLM20710
Non adaptive damping JLM20711
(from VIN A00083 to A30644)
4.0 Litre 'R' performance coupe JLM21176
4.0 Litre non supercharged JLM21277
Non 'R' performance
Convertible
Adaptive control damping
4.0 Litre supercharged JLM20706
Non adaptive control damping JLM20712
Coupe
Adaptive control damping
4.0 Litre supercharged JLM20689
4.0 Litre non supercharged JLM20710
Non adaptive damping JLM20711
(from A30645)
Convertible (marked red/purple) JLM20706
Coupe 'R' performance (pink/purple) JLM21276
Coupe, not 'R' performance JLM20689

Suspension damper, front
(to VIN 042775)
Adaptive control damping
Coupe, supersports (to VIN 024686) MJA2140EF
Coupe, supersports (from VIN 024687) MJB2140EB
Not adaptive control damping MJA2140DJ
(from VIN A00083 to A30644)
'R' performance MXD2140AA
Not 'R' performance
Adaptive control damping MJB2140EB
Non adaptive control damping MJA2140DJ
(from VIN A30645)
'R' performance MXD2140AB
Not'R' performance
Adaptive control damping MJB2140EC
Non adaptive control damping MJA2140DJ

Should be everything, I'll double check later to see if I missed anything.

 

Thanks for all the detail

 

Is the front suspension coils broken down by VIN?
I am trying to understand if JLM21276 is the correct set for me. I have a 2001 XKR Coupe with the adaptive suspension. VIN A11709.

 

I see why you asked. Confusing for your vehicle. If someone could validate that your A prefixed vin is after "031303", I think you have: JLM 20710. same one used in later N/A CATS convertible.

I'm not surprised you asked, whew.

John

 

l think you need JLM20689. This is confirmed by jaguar classic parts lookup. Out of curiosity l checked and they are available from Jag, are you sitting down... $1304.69AUD each.