A.P.D.

iTrader: (1)

Has any of you guys run a 5x120 wheel on a 4th gen (2002 T/A) ?? Which is 5x120.65 obviously, this seems like a very small difference considering wheels don't slide on dowel pins like a cylinder head lol, also who makes an eccentric ring to go from 70.3mm to 76.1mm ?? any help would be appreciated greatly

8.Lug

MY_2K_Z

iTrader: (1)

Do you do anything other than bitch and moan?

8.Lug

Chris Paveglio

iTrader: (2)

I know there is a thread here on someone machining the holes to be precise. I think I also remember someone saying the lug nuts will get loose if used on the wrong size. So, you should do some research before using the wrong size.

hokeplaya05

iTrader: (3)

there are a bunch of guys on here running wheels with 5x120 lug pattern without issues. I've heard that 120mm is within the GM factory tolerance for the bolt pattern 120.65mm, not sure how true that is though. there is a massive thread here for the guys running 5x120 bolt pattern wheels, if I find it I will link it.

edit:
found the thread
https://ls1tech.com/forums/wheels-ti...gens-pics.html

handyandy

When 4.75" converts exactly to 120.65mm, how is that "wrong"? They aren't rounding or taking away any preciseness of the measurement, it's exactly the same length just in different units. Just because you don't like the units doesn't make them "wrong".

This is more or less true. Looking at GD&T for current aluminum wheels, the lug holes are spec'ed to be equally spaced within 0.25mm, but then the size of each hole is spec'ed to +/- 0.5mm. So while the hole centers are supposed to be built within 0.25mm, you could still have one hole that is 1mm larger than another hole on the same wheel. There are also specs for the angle of the taper / seat for the nuts.

I'm not saying it's right or encouraging it, but if you pull out a caliper and measure 0.65mm you'll see how small of a measurement that actually is. And then take into account machining variations, deformation in used wheels from being on and off multiple times, etc. you're not talking about a huge difference.

A.P.D.

iTrader: (1)

... Well the amount each stud move away from center is (.0127) which is not much obviously, i just gotta find some aluminum eccentric rings and mount them up and see what i got, worse case i'll need to offset machine the holes and taper to match the 5x120.65 ... not the end of the world, we have a DRO Bridge Port at the shop

handyandy

I'd also say that the more important measurement is the center bore / hub. The weight of the vehicle is supposed to sit on the hub on the center bore of the wheel. As long as the center bore matches (or you have hub rings/adapters) then 0.65mm difference in stud spacing shouldn't be as big of a deal. If you're using those studs to not only hold the wheel on, but also center it on the hub, then you might be in for more issues.

A.P.D.

iTrader: (1)

... I agree, I've ordered a set of aluminum eccentric rings so once I have them I'll mock up the wheels and see what everything looks like ...

Big bird55

iTrader: (1)

where did you find the eccentric rings

A.P.D.

iTrader: (1)

... Ebay ... Australian Company ... we'll see if they're worth a damn, if not i'll just make my own on the lathe ...

hardtrailz

Ran a couple sets of 5x120 without issue. The rings are dirt cheap on amazon or ebay and work well.

nvm

I realize this is a really old thread. I was looking for something else regarding wheel bolt patterns and saw this comment. I think it is not correct that the weight of the vehicle sits on the hub. I think only the weight of the wheel sits on it when it's in the air when you're changing wheels. After that, with correct lug torque, the friction between the wheel and the hub (or brake disc) should hold the weight of the vehicle. That's true for some wheel designs anyway.

pdxmotorhead

There are Hub centric and lug centric systems, most german cars are HUB centric many Japanese cars are Lug centric,
My jeep is hub centric, YMMV... I've had issues when trying to use a car that needs the alignment of a hub centric wheel to driv e right, I had those hub centric rings in the wheel, after the second time a tire shop didn't get he wheels on right I sold them for hub centric's.. (Honda civic. )

witelife

I ran OEM BMW wheels with hub centric rings one time and had zero issues as I would pull wheels off frequently just to check if anything was happening. Just make sure to use aluminum hub centric rings and not the plastic ones

Gingerbread man

doomss

iTrader: (2)

5x120 is a pattern that BMW uses, however the newer Honda civics also use 5x120 with different offsets. The offset is what you need to watch out for. Our cars really can't handle much more than a +35 offset.