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1999 XK8 wheel upgrades - suggestions?

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Old 03-17-2016, 08:55 PM
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Default 1999 XK8 wheel upgrades - suggestions?

Hi all,

I'm planning to upgrade my wheels ("rims" as some may call them....) I have the stock 17" 5-spoke with the 90s cob-webby design in between the spokes.. It's the silver/platinum colour from that year. I'd prefer the 'double dark' tint available on some machined finishes. I've seen the coventry wheels but I'm not a fan anyways (I think most are discontinued anyways).

I'd like to avoid using adaptors.

Aiming for 20", very clean 5-spoke, but the problem is the 120.65 bolt pattern. These are all the brands I can find that have the style I'm going for, but AREN'T available withe the proper bolt pattern:

http://www.nicheroadwheels.com/milan-m134-w-9314.htm
Miami X203 | XO Luxury Wheels
Wheel Range
Vossen Wheels
RC22 ? Rohana Wheels

And, the one that IS available with that pattern:
BM11 | Black di Forza | Savini Wheels
Which is, of course, the only one that is ~1200 bucks per wheel (no thanks).

So......... I'm wondering if anyone knows of another brand that might make this style? I think I've exhausted google..

Oh......if you're from my dad's generation and not satisfied until it has torq-thrust IIs on everything with 2:1 rubber:wheel ratio.... I know what your reaction is gonna be......... hahahhahaha.

Thanks in advance!
 
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Old 03-18-2016, 03:13 AM
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Keep in mind you are going from a 17" wheel (and associated tire size) to a 20" wheel, this is going to reduce your sidewall way down to be able to keep outside diameter of originals as to keep the electronics happy on this car. With such a low profile tire the ride will be very stiff.

That said TSW can be fitted, they come in proper bolt pattern and I only used a very small concentric ring.
 
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Old 03-18-2016, 06:26 AM
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I would talk to the other Vendors about the Bolt Pattern. 120.65mm is 4-3/4" which is the standard bolt pattern of pretty much every GM performance car since the 1960's: Corvette, Camaro, Trans Am, etc. Many of the wheels listed as 120mm could actually be 120.65mm.

The only real issue with Jaguars is the 73.8mm center hole as GM's hub holes are generally slightly smaller.
 
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Old 03-18-2016, 10:44 AM
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Yeah, I'm young and naive enough to suck up the diminished ride quality for now in exchange for style :P The tires will be lower profile but I will probably increase the overall diameter.

I was planning to get a recalibration once I upgrade the wheels/tires. Still searching for my best options for that..

I've read up on using the 120 as 120.65 fitment, seems lots of mixed reviews, and lots of dealers or manufacturers that don't want to deal with the question (or just don't know). If it says 120, I'm not gonna use it on the car though. I don't want to take that chance however small it may be.

None of the TSWs I looked at in a similar style come with 120.65, according to the site anyways..
 
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Old 03-18-2016, 10:51 AM
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On a side note - has anyone noticed that every car/wheel combo generator has a really annoying error, where despite selecting an xK, the image it shows with their wheels is an xJ ...........?
 
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Old 03-18-2016, 12:37 PM
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You can DEFINITELY use wheels that are 120mm without any problem... that is what I have on my car. The only problem I had when I bought them (used from a BMW 5-series) was that I had to have the hub bored out slightly (and I checked with the manufacturer and they said it was no problem to do). You also want to be cognizant of the wheel offset... there is wheel thread on here that has a great link to a wheel site which calculates changes related to modifying the offset. If I find the link I will post it for you.

My wheels are Avant Garde m310's I believe... a link to them is HERE.

Check them out - they have a bunch of different styles and can modify the bore for you if you purchase them straight from them I think, AND they are fairly reasonably priced.
 

Last edited by blindside; 03-18-2016 at 12:40 PM.
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Old 03-18-2016, 12:52 PM
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Originally Posted by blindside
You can DEFINITELY use wheels that are 120mm without any problem... that is what I have on my car. The only problem I had when I bought them (used from a BMW 5-series) was that I had to have the hub bored out slightly (and I checked with the manufacturer and they said it was no problem to do). You also want to be cognizant of the wheel offset... there is wheel thread on here that has a great link to a wheel site which calculates changes related to modifying the offset. If I find the link I will post it for you.

My wheels are Avant Garde m310's I believe... a link to them is HERE.

Check them out - they have a bunch of different styles and can modify the bore for you if you purchase them straight from them I think, AND they are fairly reasonably priced.
Thanks for the info and link. So, how many miles have you put on since the wheel upgrade? What size did you use (it's the one in you signature pic I assume?) Have you had them off since the first install, and if so have you or any tech noticed unusual wear?

I'm hoping to push them out a bit wider from factory too, since there's such a huge overhang from the fender (yes, I know that maybe is a throwback to the E-type, but I think that's a feature that shouldn't be revived..)
 
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Old 03-18-2016, 01:05 PM
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This is the look I'm going for...
I had my brother do a rough photoshop to get an idea of how it would look..
First one is Vossen CV3, I think, and the other is Niche Milan.
 
Attached Thumbnails 1999 XK8 wheel upgrades - suggestions?-silverstone.jpg   1999 XK8 wheel upgrades - suggestions?-niche-milan.jpg  
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Old 03-18-2016, 02:36 PM
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If I could choose any, I think it would be the Niche Milan http://www.nicheroadwheels.com/milan-m134-w-9314.htm

So, in looking at the specs (http://www.nicheroadwheels.com/specs.cfm?id=3665), and assuming the 5x120 would fit my car fine.. looks like there are 3 options:

M134208521+15
M134208521+35
M134208511+35

When I cross-reference the coventry site (http://fitment.coventrywheels.com/al...1999&model=XK8) it looks like for 20x8.5 wheels, I need a 20 offset but since the two options for this wheel are 15 or 35, I'd go with the 15 since I'd like to widen the track anyways (assuming it clears everything.. don't think 15 will be excessive from factory offset..).

That leaves the one option with a bore hole size of 72.60, but the Coventry site doesn't show any specs for that..Anyone know where to find that number?

Any red flags from any other specs here? http://www.nicheroadwheels.com/specs.cfm?id=3665

So... is it 'better' or 'safer' to go with adaptors or fit 120 onto 120.65? Or, am I just overthinking this altogether?
 

Last edited by emaychbe; 03-18-2016 at 02:41 PM.
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Old 03-18-2016, 03:04 PM
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The bore NEEDS to be 73.8mm minimum. Anything smaller needs boring.


15mm offset will clear fine with 8.5" rim. Zero offset clears on a 8" rim. less than this you'll want to roll the rear fender lips. Factory wheels are 33 offset, but less looks better.
 
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Old 03-18-2016, 03:18 PM
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Ok, sounds good. Is there a reliable online resource with those specs, or where did you get the 73.8mm number from?
 
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Old 03-18-2016, 03:59 PM
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Read this post
https://www.jaguarforums.com/forum/x...-shoes-144124/

Bore has been discussed here often. I just replaced my wheels and can confirm 73.8

bte, this forum is one of the most reliable places for information.
 
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Old 03-18-2016, 04:07 PM
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I suspected it would have been (the plethora of info is sometimes overwhelming.. but that's a good thing).

Thanks
 
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Old 03-18-2016, 04:39 PM
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Originally Posted by emaychbe
Ok, sounds good. Is there a reliable online resource with those specs, or where did you get the 73.8mm number from?
When I test fit a wheel off of my '89 TTA and it hung up on the bore, I figured something was up. Offset, Bolt pattern and tire height were perfect, but the bore was 1mm too small.

I currently run 32mm spacers with 33mm offset factory 17X8's wheels to improve the appearance in back.

Attached is a picture of what "zero offset 8" wheels" this looks like.


Here is stock 33mm offset:


I'm eventually going to put 9.5" wide 70mm offset wheel in back with the 32mm spacers (38mm total offset) with 285 wide tires.

I have rolled my fender lips, but it wasn't totally necessary.
 
Attached Thumbnails 1999 XK8 wheel upgrades - suggestions?-dscf7085.jpg   1999 XK8 wheel upgrades - suggestions?-dscf7079.jpg  
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Old 03-18-2016, 05:57 PM
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Not sure what kind of deal it is but there is a guy in Austin selling a brand new set of 20 Coventry on CL. Seems like close to retail but they have been on there for a while maybe a deal could be made. I wouldn't put a 20 wheel on mine, I think I am going to let some of the air out on my 17 inch these cars are stiff if you have some rough roads. I have been running 34 cold but going to start moving low 2 lbs at a time. I read specs somewhere saying 26 min for comfort but that seems low to me.
 
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Old 03-18-2016, 06:32 PM
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Ungn: thanks for those pics. Yeah - a good inch to play with, at least!

Ok, I just found this brand that makes 120.65 in a style I like: BM11 | Black di Forza | Savini Wheels

But of course no details on offset or bore hole specs.

Well............ I've only had 3 weeks of driving and that was in October, so if I upgrade when it comes out of storage, I'll be none the wiser! hehe

Still, everyone I talk to seems to be sure that 120 on a 120.65 spec car is no problem, and have installed them many times..

TexMurphy: where are those wheels? Not sure what "CL" refers to, sorry
 
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Old 03-18-2016, 07:28 PM
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Sorry I thought everyone knew that one. Craigslist should find them if you search for Coventry. Made to fit perfectly with correct offset. Probably the most popular after market wheel. I am sure if you search forum you will see the one that is similar to your pics although 18-19 probably more used
 
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Old 03-18-2016, 07:38 PM
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Hmmmmmmmm ... well those are the nicest of the Coventry options IMO..

Why'd you have to share that hahaha.. I have enough to consider already!

Thx
 
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Old 03-18-2016, 07:56 PM
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Shoot him an offer if you like them. I would consider if them if i wanted 20
 
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Old 03-28-2016, 10:01 AM
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I found a place that says XO brand will do custom drilling for: 5x120.65, centre hub bore hole size 73.8mm, offset +20... ~$700(CAD) each .. o_O
 


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