Are bmw and chevy rims 5x4.75 bolt pattern?
03-11-2009, 08:47 PM
#1
Are bmw and chevy rims 5x4.75 bolt pattern? Been reading alot about the issue. i have both a chevy and a bmw, and they both need new wheels, and bmw shows to be 5x120 bolt pattern, and chevy shows to be 5x4.75 or 5x120.7. Is there very lil difference? ive seen a blazer on craigslist with bmw wheels thats why i ask. meaning bmw on chevy , and chevy on bmw. isnt the center hub bore different?
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JONATHANSIGLER7 (03-19-2022)
03-11-2009, 11:49 PM
#3
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I've ran them b4. Auto X, drag raced and flat out abused my car with them and never had anykind of issues. But like Grimes said, def. debated. I just made sure 2 keep an eye on the lug nuts to make sure they never loosened up, and well they never did.
03-12-2009, 10:13 AM
#4
I bet if you actually measured the factory rims, or looked at the allowable tollerances, you'd be surprised to find that the factory 5x120.7 is probably +/-1.5mm if not more.
We're not talking about piston or bore diamter, or bearing clearances. Do you really think 0.7mm makes that much difference? Trust me, for a wheel it doesn't.
We're not talking about piston or bore diamter, or bearing clearances. Do you really think 0.7mm makes that much difference? Trust me, for a wheel it doesn't.
03-12-2009, 10:55 AM
#5
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Im with The Alchemist on this one.. I had a 93 sonoma that had bmw x5 wheels and I had a 94 bmw 318i that I put 17" camaro wheels on...
the lug pattern is too close to matter, 5x4.75 is 120.65mm
the only thing i did notice, factory bmw wheels are hub centric, and a gm hub is too large to fit, I had to take a carbite burr (sp) on a die grinder and shave it down a little. aftermarket wheels have rings that can be snaped in or out, so they come larger, and when I had camaro wheels on the bmw I noticed the lugs would get tight after driving for long time (1yr) but nothing to worry about..
they fit, ran them for years both ways, the sonoma even had 1.5" wheel spacers. it was also a 5.7L L98 corvette TPI. so I gave it hell all the time.
the lug pattern is too close to matter, 5x4.75 is 120.65mm
the only thing i did notice, factory bmw wheels are hub centric, and a gm hub is too large to fit, I had to take a carbite burr (sp) on a die grinder and shave it down a little. aftermarket wheels have rings that can be snaped in or out, so they come larger, and when I had camaro wheels on the bmw I noticed the lugs would get tight after driving for long time (1yr) but nothing to worry about..
they fit, ran them for years both ways, the sonoma even had 1.5" wheel spacers. it was also a 5.7L L98 corvette TPI. so I gave it hell all the time.
03-12-2009, 05:57 PM
#6
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I would have to disagree with The Alchemist, .65 is a big difference. If the difference didnt matter then why wouldnt they have just made them both 5x120. Youre going to be bowing your studs inwards, and when/if you decide to bolt on the stock ones on you might snap the studs in the process, or even worse while on the road.
03-13-2009, 03:15 AM
#7
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I would have to disagree with The Alchemist, .65 is a big difference. If the difference didnt matter then why wouldnt they have just made them both 5x120. Youre going to be bowing your studs inwards, and when/if you decide to bolt on the stock ones on you might snap the studs in the process, or even worse while on the road.
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03-13-2009, 10:35 AM
#9
0.7mm = 0.028"
That is the equivalent to 5 sheets of standard 8-1/2 x 11 printer paper (one sheet is 0.004" thick). It is minescule!
OMGaZ28,
GM and BMW are not the same company, nor are they in the same country and do not use the same units of measure. GM uses Standard American units like inches and feet, where as BMW being in Germany uses Metric units (such as millimeters and meters) like most everyone else. It is mere coincidence that there lug patterns are similar. This is why they possibly didn't collaborate when they were initially designing their wheels, to ensure we could use BMW wheels on GMs and vice versa.
That is the equivalent to 5 sheets of standard 8-1/2 x 11 printer paper (one sheet is 0.004" thick). It is minescule!
OMGaZ28,
GM and BMW are not the same company, nor are they in the same country and do not use the same units of measure. GM uses Standard American units like inches and feet, where as BMW being in Germany uses Metric units (such as millimeters and meters) like most everyone else. It is mere coincidence that there lug patterns are similar. This is why they possibly didn't collaborate when they were initially designing their wheels, to ensure we could use BMW wheels on GMs and vice versa.
Last edited by 12secSS; 03-13-2009 at 10:41 AM.
03-13-2009, 12:35 PM
#10
0.7mm = 0.028"
That is the equivalent to 5 sheets of standard 8-1/2 x 11 printer paper (one sheet is 0.004" thick). It is minescule!
OMGaZ28,
GM and BMW are not the same company, nor are they in the same country and do not use the same units of measure. GM uses Standard American units like inches and feet, where as BMW being in Germany uses Metric units (such as millimeters and meters) like most everyone else. It is mere coincidence that there lug patterns are similar. This is why they possibly didn't collaborate when they were initially designing their wheels, to ensure we could use BMW wheels on GMs and vice versa.
That is the equivalent to 5 sheets of standard 8-1/2 x 11 printer paper (one sheet is 0.004" thick). It is minescule!
OMGaZ28,
GM and BMW are not the same company, nor are they in the same country and do not use the same units of measure. GM uses Standard American units like inches and feet, where as BMW being in Germany uses Metric units (such as millimeters and meters) like most everyone else. It is mere coincidence that there lug patterns are similar. This is why they possibly didn't collaborate when they were initially designing their wheels, to ensure we could use BMW wheels on GMs and vice versa.
03-13-2009, 12:48 PM
#11
Lets look at some examples of where 0.65mm (or 0.0255", read 25 thousandths) matters:
Head gasket thickness.
Bearing clearance.
Lifter preload.
Camshaft lift.
Valve spring shim.
Even backlash on gears.
But definitely not on a rim. I bet the hubs have at least 1-2mm worth of tolerance built in.
Head gasket thickness.
Bearing clearance.
Lifter preload.
Camshaft lift.
Valve spring shim.
Even backlash on gears.
But definitely not on a rim. I bet the hubs have at least 1-2mm worth of tolerance built in.
03-13-2009, 01:04 PM
#12
Lets look at some examples of where 0.65mm (or 0.0255", read 25 thousandths) matters:
Head gasket thickness.
Bearing clearance.
Lifter preload.
Camshaft lift.
Valve spring shim.
Even backlash on gears.
But definitely not on a rim. I bet the hubs have at least 1-2mm worth of tolerance built in.
Head gasket thickness.
Bearing clearance.
Lifter preload.
Camshaft lift.
Valve spring shim.
Even backlash on gears.
But definitely not on a rim. I bet the hubs have at least 1-2mm worth of tolerance built in.
03-13-2009, 01:13 PM
#13
I have ALWAYS used BMW wheels. They fit perfect. Even GMMG used Hamanns on the 2003 heritage Trans Am. You have to use hubcentric rings, then your rims are centered on the hub and not the lugs. No car should rely solely on the lugs for centering/balancing. Lugs simply are there to hold the wheel on. If the lugs go in the hole, they'll work fine as long as your using the appropriate hub rings. Even if you didnt, it would be ok. You know what i DID have happen to me? I had FACTORY C5 rims fall off my car, never any issues with my BMW rims. And theyre so sweet looking lol
03-13-2009, 01:38 PM
#14
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I have to agree with the rest.
I've been running 5x120 wheels with Hubcentric rings for over 3 yrs now with no real issues.
If your seriously worried about breaking studs just install some ARP's and be done with it.
I've been running 5x120 wheels with Hubcentric rings for over 3 yrs now with no real issues.
If your seriously worried about breaking studs just install some ARP's and be done with it.
03-13-2009, 05:19 PM
#15
LMFAO at people being paranoid at 0.65mm... For crying out loud, mechanical pencil lead is .7mm! Some people are idiots. The Alchemist is 100% right. Factory tolerances on the wheel hubs are far greater than that difference I promise!
03-13-2009, 09:25 PM
#19
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I totally agree that .65mm is not a big deal. I'm no expert but if you have the wheel centered on the hub, isn't that .65 split between the two opposing lugs? That 120 or 120.65mm is the distance between the centers of two lugs, if the wheel is centered then that distance should be split between the two lugs, no?
I'm more concerned about my wheels not being hubcentric, I was surprised at the amount of play without hub rings installed, although still not huge amount. I currently do not have rings installed, I just torqued the wheels in a star pattern with progressively higher amounts to make sure the wheel was centered.
I'm more concerned about my wheels not being hubcentric, I was surprised at the amount of play without hub rings installed, although still not huge amount. I currently do not have rings installed, I just torqued the wheels in a star pattern with progressively higher amounts to make sure the wheel was centered.
