I've read that there are 3 sizes of rear hubs... trying to find the correct numbers for my 2012xkr, but getting this information consolidated in one place would be massively helpful for future forum members. I know if this thread had existed 2 months ago, sizing wheels would have been much easier.

I'm hoping we can end up filling out the following information:

2007-2009
Maximum wheel size: 19x??et?? (Front) 19x??et?? (Rear)
Recommended spacer size for stock wheels: ??mm (front) and ??mm (rear)

2010-2011
Maximum wheel size: 19x??et?? (Front) 19x??et?? (Rear)
Recommended spacer size for stock wheels: 20mm (front) and 15mm (rear)

2012-2015
Maximum wheel size: 19x9.5et?? (Front) 19x11et?? (Rear)
Recommended spacer size for stock wheels: ??mm (front) and ??mm (rear)

Some questions...

Are there indeed 3 separate hub distances across all model years?

Looking all over the net, there's a variety of wheel sizes and offsets listed for 2012+ and other years. I suspect this is due to assumptions that one year fits other years, bad data, lack of actual measurements, etc.

I think that the stock tamana wheels I have on my 2012 are 19x9.5 et51 rear and 19x8.5 et49 front (though some sources say the front is also et51).

 

@MaximA put HRE P101 in gloss Charcoal that he ordered directly from the factory onto his 2013 xkr. 20x9.5 ET45 front and 20x11 ET40 rears. However, his rear 305 tires rubbed, so he had to downsize to 295s.

I think if he had tucked his rear wheels in 5-10mm, those wider tires would have fit perfectly... So, I suspect a 20x11 et45-50 is a better choice and also reduces scrub radius.

https://www.jaguarforums.com/forum/x...e3/#post873893

 

 

I saw that, but you mentioned in that thread that the measurements only applied to 2010-11, and not 2012+.

Also, that stock size doesn't match my tamana wheels. It was part of the confusion I had that prompted the creation of this thread.

 

Sorry, I didn't reread the whole thread, just saw that last post and commented. Could always just change the backspacing though, and there ya are.

 

Yeah I'm just not sure what to change it to... I don't know how different 2010-11 and 2012+ rear hubs are, and if they're different at all.

Ideally, this thread will result in all the question marks on the specs in first post getting filled in... So it helps anyone with wheel questions going forward.

I'd love to see this get turned into a reference guide that gets stickied. Even better if people post pictures of their custom wheel setup; listing X150 model & year, specs on the pictured wheels, and any suspension changes if any.

 

I think a thread dedicated to this topic would be very useful, with a list of all models etc as the OP proposed. I have thought about adding spacers to my 2008 XKR (on Senta rims) but have read so many conflicting accounts of what I need, front and back, that I gave up in the end. Like many other owners, I feel that the car would look better of the rims just filled out the arches a little more.

 

They aren't.

The only practical differences are 4.2 vs 5.0, with the rear track of the 4.2 being narrower, so the factory rear wheels have a different offset.

 

These are the factory wheel dimensions for 4.2 & 5.0

X150 4.2 standard
20x8.5 ET49
20x9.5 ET26

X150 4.2 Vortex
20x9 ET49
20x10.5 ET31

X150 5.0 Standard
20x8.5 ET49
20x9.5 ET46

X150 5.0 Vortex
20x9 ET49
20x10.5 ET52

I won't get into recommended spacers (never had them on any of my cars).

But I will say, that in my opinion, the fitment of the Vortex wheels on the rear is just about perfect. Aesthetically I feel the fronts could be pushed out a little, but not much.

 

Using 4.2 rear wheels on the 5.0 models negates the need for a rear spacer, but may run into some fitment issues with rubbing the fender lip as 20mm is a bit farther out than most people prefer (15mm)

 

Conflicting?
20mm front 15mm rear on the 4.2 with Senta wheels has been mentioned several times, including me and works/looks great!:-) Only physical action I had to take was cutting off the non threaded part of the studs with a grinder on the rear hubs.
It transforms the look of the car!

 

focus st spacers are like 70 bucks a pair from 15-25mm

 

I like the way the car looks! OK, so I am slowly getting there - I need 20mm on the front and 15mm on the rear. When I look at the websites selling spacers, there is a ton of stuff about offsets and so on that I don't really understand. For example, they are asking me for 'centre bore' and 'PCD', which means nothing to me.

Since I too have Senta wheels, could you tell me what I need to order for my car, or point me to someplace that has the info? Many, many thanks.

 

well, all i can say is, research carefully! these are both critically important to your ultimate decision.

center bore, CB, is how much of the wheel is machined out, so that the wheel rides on the hub correctly. i have hub centric rings for my aftermarket wheels to match the wheel bore to the hub diameter. stock wheels typically ride perfectly without a spacer. these come in aluminum or hard plastic, both are fine. they are measured to a tenth of a millimeter.

pitch circle diameter, PCD, is the diameter of the centerline through your bolt pattern, basically. i think all of our cars are 5x108. five bolts, 108mm diameter circle through their centers.

after you get the right bolt pattern, a big enough center bore, and enough backspacing to suit the suspension geometry, you can still theoretically end up with wheel interference with the caliper. once you add your spacers, though, you're not likely to have that problem.

 

here is your car, probably: https://www.wheel-size.com/size/jaguar/xk/2008/

Center Bore: 63.4 mm
PCD: 5x108 (5x4.25)

 

If you like the look then go for spacers, if you like spirited driving then don't do it.
Putting spacers changes the scrub radius as we as the inclination of the king pin. Another words your are changing the geometry of the suspension from stock. If you want to bring it back to stock then the camber angles needs to change and possibly even castor. I would go to a proper suspension specialist and see what they say.

 

Also, REAR spacers are fine to just add and go, although they do also induce excess wear on the wheel bearings due to non-centered loads. Not a lot, and probably not noticeable in 50,000 miles, but it is still a thing.

 

Correct.
Had mine for 2 years now and no ill effects what so ever and you can do spirited driving, mine hasn't broken off yet!:-)

 

Jaguar spent several millions of dollars on suspension development and you want to throw on a couple of bucks worth of wheel spacers. If you like to drive your car with compromise handling that's your choice it doesn't bother me at all, hey its your money your car the customer is always right.

 

Allways someone who dislike people customizing their car by scaring them to keep the car OEM!:-D
I've even lowered my car and with the spacers it should be super dangerous to drive but it drives just as good/nice as OEM but it looks soooo muuuuch better!:-)
My tires all wear even and have yet to hear anybody having a problem with spacers or lowering springs.