I'm happy for you. I like to see the data to backup your findings.

 

I hear what you are saying, but manufacturers always have to play safe, take account of numerous different regulations in numerous different markets, think about warranty claims etc etc. Deviating, in a sensible way, from their decisions based on all those factors doesn't necessarily mean you will end up with a catastrophe. I'd imagine that millions of spacers have been sold by H&R over the years, and if they all led to serious problems, we'd probably have heard of them. Plus, of course, we have first-hand reports from members like @peterv8 and others, none of whom is reporting a problem. HST, I agree that one needs to move cautiously, hence my raising my concerns and questions here. If someone was considering an outlandish modification, using something like 60 mm spacers, or using cheap spacers, then I'd be the first to comment. And while it is true that the geometry will be changed, and that the strain on wheel bearings will be increased, the differences will not be hugely significant if sensible precautions are taken (e.g. using 15 mm or 20 mm spacers from a reputable company such as H&R). I know people who race saloon cars, and they add much bigger spacers than I am considering and then race the cars at 100% for an hour on a track, all without catastrophic failures.

Plus, I don't ever drive at ten tenths of my car's capability. Probably not even at seven tenths, so even if the handling is compromised a little, I won't notice it. I don't track the car - and if I did, I'd probably be using much wider wheels anyway, ans they impose the additional forces you mention too.

 

You just saw the data: 2 years, spirited driving, no mechanical issues, even tyre wear. That's the best sort of data available - it's based on actual user experience.

OTOH, you didn't give any data to support your own claims

 

I found a site where you input your license plate number and it finds your exact car, This is what it proposed for me for the 15 mm spacers:


I am thinking that if I buy these, I will be good to go?

https://www.buycarparts.co.uk/h-and-r/13666415

 

@peterv8 Can you tell me how much you had to cut off for sufficient clearance with the 15mm spacers please?

I have ordered the H&R spacers now

 

on the 15 mm spacers I only cut the non-threated part off.
Did you go for 15mm all around cause the front really need 20mm plus you only have to grind 10 bolts.:-)

 

Thanks for the reply. No, I went for 20 mm on the front and 15 mm on the rear, as you did. I will follow your lead and remove the non-threaded part on the rears. Thanks for the advice and the initial heads-up - much appreciated. Looking forward to this mod!

 

You only have to remove stud material IF your wheels are flat on the mating surface. Some wheels have pockets on the back side between the lug holes where the long studs fit nicely.

 

Pockets on the Senta’s are not quite deep enough, so you’ve got to take off the non-threaded part of the stud (for the 15mm spacers).

 

Thanks guys. I have the exact same wheels (and spacers, when they arrive) as @peterv8,so if he needed to grind, then so do I This forum is so helpful and has never failed to answer any questions I have had about my XKR!

 

This would suggest that there are only 2 suspension options... 4.2 and 5.0

There is no unique setup required for 2010-11

Also, the online reports of tamana wheels being et51 are likely incorrect?

 

Right, the only differences are 4.2 vs 5.0

I found a pic online of a Tamana wheel, there's ET51 cast into the back of a spoke along with the other dimensions.

9-1/2Jx19CH.51, so that's the rear

It's not surprising that the 19" would have slightly different offsets to 20"

 

Wanting to keep this thread going and hope that anyone with custom wheels and spacers can post pictures, along with the specs of everything installed to achieve their look.

 

i wouldn't trust centric rings if I were you judging by my own experience.That's why got me a set of wheels custom made

 

i'll post pics of how my wheels look here that im getting custom made for you to check out soon as they arrive and I put them on my XKR convertible.They supposed to shipped out today.Hope the wheels on mine gives you an idea of how to bring out the true look of what you want yours to look like.I like to see pics as well of how much better people can make an XKR look

 

I have a pair of 20 mm spacers (front) and a pair of 15 mm (rear) on back order from H&R in Germany. They should be here in about a week's time. When they arrive, I will document the fitting of them here, along with before and after pics. The job appears simple enough on the face of it -- the only part I am not looking forward to is using an angle grinder to cut off the unthreaded parts of the rear wheel studs in order to accommodate the 15 mm spacers. But that is more about me disliking using angle grinders rather than anything to do with the XKR.

 

If you can, please include things like vehicle year & engine size, stock wheel & tire make/model/dimensions, suspension changes if you have them, and aftermarket wheel & tire make/model/dimensions. It will help others with their comparisons.

Looking forward to seeing the photos.

 

Vehicle is 2008 MY. 4.2L Supercharged. Jaguar wheels - Senta. Tyres: Front: Dunlop SP Sport Max 245/40/R19. Rear: Dunlop SP Sport Max 275/35/R19. No suspension changes.

 

My H&R spacers finally arrived this morning from Germany. Fitted them in a couple of hours -- grinding a few mm off the rear studs went more smoothly than I thought it might. This is on a 2008 XKR with Senta wheels. 20 mm spacers fitted to front, 15 mm to rear. Both wheels line up perfectly with the fenders.

I love the way the car looks now. I took it for a short test drive of about 10 miles and no problems. Couldn't exceed 80 mph due to traffic, but all good. I think I may have noticed slightly sharper steering and slightly better roadholding/handling. On one of my 'test bends' I cornered at my usual max speed and felt I could have gone a little faster - I will test this next time out. Of course, these impressions may be confirmation bias at work - a longer journey might settle that in my mind one way or the other. HST, my main reason for fitting the spacers was cosmetic, and I am extremely pleased with the new look.

All in all, a successful modification.

Thanks to everyone who has helped me with this, especially @peterv8 who was my original inspiration and whose car and wheels are pretty much identical to my own. Thanks buddy!

I haven't posted pics as they will be more or less identical to every other pic of this mod, but if anyone wants to see some pics, I will be happy to oblige.

 

Senta wheels are 20s