XJ XJ8 / XJR ( X308 ) 1997 - 2003

pcd 5x120 / Center 74.1 Wheels

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Old Feb 14, 2017 | 02:56 PM
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Default pcd 5x120 / Center 74.1 Wheels

Hello Community,

Has anybody fitted these type of wheels on a jaguar x308 ?

Pros and cons ? Dangerous ? Any modifications required ?

Any advice / experience welcome

Thank you
 
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Old Feb 14, 2017 | 03:50 PM
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That wheel size is factory bmw e39, which is likely why you are asking. That hub bore is used by a lot of aftermarket wheels too, so they will fit universally across the series. x308 bolt pattern is 5x4.75", which equates to 5x120.65mm, which is only 0.65mm difference. A standard business card is approx. half that difference. As an engineer, i imagine there being a fairly large tolerance in the bolt circle and lug pattern on the car. A lot of people use BMW spec'ed wheels on the x308. It has been done and proven to be safe.
 
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Old Feb 15, 2017 | 04:52 AM
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Hi, thanxs for your response. I actually found this outfit http://www.motorsport-tech.com/index.html that can make adapters to fit any wheel to any car. I feel that would be the better option. what are you thoughts ? Cheers
 
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Old Feb 15, 2017 | 05:38 AM
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Adapters are only working if you can buy wheels with sufficient reduced offset, to compensate for the adapter thickness.
 
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Old Feb 15, 2017 | 06:50 AM
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Originally Posted by Benson7
Hi, thanxs for your response. I actually found this outfit Wheel Adapters, Wheel Spacers, Hub Rings, and much more! | Motorsport Tech that can make adapters to fit any wheel to any car. I feel that would be the better option. what are you thoughts ? Cheers
I wouldnt bother with adapters, but if you feel so inclined, it looks like "wobble nuts", AKA "Variable PCD" nuts are available. As stated above, you would need to account for the adapter thickness with wheel offset, which, depending on wheel width and assuming an adapter thickness of 1.5", puts the offset in the et50's, making wheels difficult to find.

BMW guys are commonly bolting up chevy wheels to their cars, which is essentially doing the exact opposite of what we are trying to accomplish here.

disclaimer: i have yet to try to bolt up a bmw wheel to my car. I am a BMW guy and have a set of wheels just itching to end up on my XJ.
 
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Old Feb 15, 2017 | 01:38 PM
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Thanxs guys for your comments. In the event that I am using custom adapters. Do you know what is the length of the stud on the car in order to order the right thickness so that the nuts sink in flush with the spacer without having to grind the studs down? I was thinking 22mm, am I correct ?
 
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Old Feb 15, 2017 | 04:22 PM
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Originally Posted by Ahenry014
I wouldnt bother with adapters, but if you feel so inclined, it looks like "wobble nuts", AKA "Variable PCD" nuts are available. As stated above, you would need to account for the adapter thickness with wheel offset, which, depending on wheel width and assuming an adapter thickness of 1.5", puts the offset in the et50's, making wheels difficult to find.

BMW guys are commonly bolting up chevy wheels to their cars, which is essentially doing the exact opposite of what we are trying to accomplish here.

disclaimer: i have yet to try to bolt up a bmw wheel to my car. I am a BMW guy and have a set of wheels just itching to end up on my XJ.
A wobble nuts considered safe?
 
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Old Feb 16, 2017 | 06:56 AM
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I cant speak to their safety. Never used them, I only know they exist, alongside "wobble bolts" made for cars like audi/VW/BMW. I know some of those guys use them to bolt up 5x114.3 wheels to 5x112 cars. They dont seem to have any issues.
 
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Old Feb 16, 2017 | 07:15 AM
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I think you have now 3 threads about the same project, a bit confusing ...

Anyway, in an other thread of you, you mentioned that the center bore is 110, and you needed to use ring adapters for these wheels.

I don't think using AND ring adapters AND wobble nuts are the correct combination for a solid and well balanced wheel, it should not be my choice.

And I think you overthink this whole matter a bit, in the various posts you got an answer on each and every question there might be.

For the rest, just craw under the car, and plus/minus from what you have to what you want, it is not that complicated.
 
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Old Feb 16, 2017 | 08:39 AM
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Originally Posted by ericjansen
I think you have now 3 threads about the same project, a bit confusing ...

Anyway, in an other thread of you, you mentioned that the center bore is 110, and you needed to use ring adapters for these wheels.

I don't think using AND ring adapters AND wobble nuts are the correct combination for a solid and well balanced wheel, it should not be my choice.

And I think you overthink this whole matter a bit, in the various posts you got an answer on each and every question there might be.

For the rest, just craw under the car, and plus/minus from what you have to what you want, it is not that complicated.
oooo yea, compounding misalignment would likely result in a not so balanced wheel to hub combo.
 
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Old Feb 16, 2017 | 09:40 AM
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Originally Posted by ericjansen
I think you have now 3 threads about the same project, a bit confusing ...

Anyway, in an other thread of you, you mentioned that the center bore is 110, and you needed to use ring adapters for these wheels.

I don't think using AND ring adapters AND wobble nuts are the correct combination for a solid and well balanced wheel, it should not be my choice.

And I think you overthink this whole matter a bit, in the various posts you got an answer on each and every question there might be.

For the rest, just craw under the car, and plus/minus from what you have to what you want, it is not that complicated.
Sorry about that ...I am really trying to optimize my chances on getting the last info I need....you are right, I am overthinking the whole situation but I want to be sure on what I am doing...because ordering from abroad would be complecated if I made a mistake.

You are absolutely right about that the combo ring and wobble nuts. I have found the wheel I need with 74.1mm centre bore so I will use wobble nuts to use these 5x120 rims.

However I am not the manual type of guy, so going under the car to measure the inner clearance would be challenging for me, that is why I am maximising my chances on getting the right answer...

I still cant figure out my two questions ???? ahahhah
 

Last edited by Benson7; Feb 16, 2017 at 09:42 AM.
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Old Feb 16, 2017 | 10:38 AM
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I am running wheels made for a BMW. It was pretty tight but possible. I wasn't comfortable running them as is so I machined the lug seats slightly; like in this thread:

BMW wheel bolt pattern/PCD correction, 120mm to 120.65mm - Third Generation F-Body Message Boards

The problem with BMW wheels other than the slightly smaller PCD is BMW uses lug bolts (smaller diameter) not lug nuts. Therefore the lug recesses in the wheels are smaller diameter. You can't use wobble nuts because they won't fit. I tried. You also need smaller diameter lug nuts and a thin walled socket to fit in the recesses.

But that all depends on the design of the wheel. Maybe some aftermarket wheels for BMW might have larger holes, but mine are aftermarket as well.

If using adapters you need wheels with high enough offset to accommodate the thickness of the adapters. But then they don't have to be BMW wheels, and you can adapt to any PCD. More choices.
 

Last edited by SteveM; Feb 16, 2017 at 10:42 AM.
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Old Feb 16, 2017 | 11:38 AM
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Originally Posted by SteveM
I am running wheels made for a BMW. It was pretty tight but possible. I wasn't comfortable running them as is so I machined the lug seats slightly; like in this thread:

BMW wheel bolt pattern/PCD correction, 120mm to 120.65mm - Third Generation F-Body Message Boards

The problem with BMW wheels other than the slightly smaller PCD is BMW uses lug bolts (smaller diameter) not lug nuts. Therefore the lug recesses in the wheels are smaller diameter. You can't use wobble nuts because they won't fit. I tried. You also need smaller diameter lug nuts and a thin walled socket to fit in the recesses.

But that all depends on the design of the wheel. Maybe some aftermarket wheels for BMW might have larger holes, but mine are aftermarket as well.

If using adapters you need wheels with high enough offset to accommodate the thickness of the adapters. But then they don't have to be BMW wheels, and you can adapt to any PCD. More choices.
Thanxs for this comprehensive information. Do you happen to know what adapter thickness I should use for a jaguar x308 in order that the lug nuts sink in flush to the adapter ?

Cheers
 
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Old Feb 16, 2017 | 12:00 PM
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I have used 20mm spacers/adapters on my stock wheels to clear the Brembos and they worked. It would also depend if the wheels have pockets on the back of them, like the stock ones do. The studs are 33mm long.
 
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Old Feb 16, 2017 | 12:11 PM
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thats a very interesting read. I would not have expected being able to physically see the difference. I will be trying this myself. I have a BMW wheel with the correct hub bore. I will line it up on the hub and see if it makes me nervous or not. All wheel/hub combos are going to yield different tolerance stack ups.
 
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Old Feb 16, 2017 | 12:13 PM
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Great stuff here SteveM :-)

For now I am running asteroids and they dont have pockets, so I had to send back my +15mm H&R wheel spacers :-(

But now I wanna go large so i am finaly getting the right info. thanxs to you too.

However, just to be clear you mentionned on the other thread running 17mm less inner clearance on the rear, what was the setup please ?
 
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Old Feb 16, 2017 | 12:27 PM
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Originally Posted by Ahenry014
thats a very interesting read. I would not have expected being able to physically see the difference. I will be trying this myself. I have a BMW wheel with the correct hub bore. I will line it up on the hub and see if it makes me nervous or not. All wheel/hub combos are going to yield different tolerance stack ups.

You may not visually see it but when you tighten the nuts down you will feel/see the difference.
 
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Old Feb 16, 2017 | 12:32 PM
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Originally Posted by Benson7
Great stuff here SteveM :-)

For now I am running asteroids and they dont have pockets, so I had to send back my +15mm H&R wheel spacers :-(

But now I wanna go large so i am finaly getting the right info. thanxs to you too.

However, just to be clear you mentionned on the other thread running 17mm less inner clearance on the rear, what was the setup please ?

I haven't seen the back of an Asteroid wheel but both my Jaguar Pentas and Milans have pockets. So do my aftermarket SSR's. Maybe it's because they're all 5-spoke and they're able to put pocket on those.

My setup was already in that post.
 
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Old Feb 16, 2017 | 12:41 PM
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Originally Posted by SteveM
I haven't seen the back of an Asteroid wheel but both my Jaguar Pentas and Milans have pockets. So do my aftermarket SSR's. Maybe it's because they're all 5-spoke and they're able to put pocket on those.

My setup was already in that post.
Maybe if I lay things out for you on what I am thinking on doing, it will be easier for your to give some advice :-)

Front : 19x8.5 with 255/35 ET 20 - would extend the wheel by 19.35mm and would increase the inner clearance by 6.65mm - I feel comfortable here

Rear : 19x9.5 with 275/35 ET 20 - would extend the wheel by 32.05mm and would reduce the inner clearance by 6.05mm - Not too sure here ??

PS My car is lowered with Arden Springs (roughly -25mm from stock)

Many thanxs for your valuable time
 
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Old Feb 16, 2017 | 12:47 PM
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Your front will be fine but the rear won't clear the fender lips.
 
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