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View Full Version : OK after carefull measurement,,,



MonzaRacer
09-13-2009, 07:28 PM
WEll I work for a chain parts/repair store and we sell wheels and well the quality of the wheels have been suspect as soon as I see the price.
Well even though they are said to be lug-centric we have had vibration issues ,but then since the Hankook ,Kuhmo,Cooper built tires we have been selling quality sucks SOOOOOOOOOOOOOOOOOOOO bad. But we have had to install hub centering rings on pretty much every car getting these wheels.
So customer comes in, orders wheels to fit 5x120 (BMW ) pattern but brings in GM product. So luckily I know a little about these cars and the issues posed on the difference between 120 bolt pattern over the 120.65 bolt pattern.
Well after measuring the "stock" pattern and found all 3 wheels had issues on being "in spec" and setup wheels both with and without rings, and by simply using a torque wrench.
So far, I have yet to see no reason why, with eccentric mounting rings, it will pose no basic issues, especially if you check your pattern, and the actual straightness of wheel studs cannot be done safely. NUT I would recommend using new pressed in wheel studs of a quality brand(ie NAPA,Carquest,Dealer) or acceptable aftermarket brand.
No difference and honestly I even measured the stud tips on one with old stock pattern rims and new rims and the pattern stayed nearer to even both rims.
Even with a 0.013" difference on each stud, they honestly never moved more than maybe half that, ie they merely "flexed"0.006" .
Heck I would say that your running them down with an impact would do more damage than the actual pattern change.
Just some observations from a guy trying to measure the difference.


Oh yeah watch your Hankook, Kuhmo,and any other popular tires as many are going to China for production and quality is deplorable. A set of Hankook Dynapro AS made in Korea, pop onto rims nicely, and ride great, same type truck same tire but all 4 made in China, owner kept them for 4 days. He now had Bridgestone Dueler HL Alenza and says it rides better than Michelin's .
He put the Hankooks on as they were stock.

jturkey69
11-08-2009, 05:24 PM
WEll I work for a chain parts/repair store and we sell wheels and well the quality of the wheels have been suspect as soon as I see the price.
Well even though they are said to be lug-centric we have had vibration issues ,but then since the Hankook ,Kuhmo,Cooper built tires we have been selling quality sucks SOOOOOOOOOOOOOOOOOOOO bad. But we have had to install hub centering rings on pretty much every car getting these wheels.
So customer comes in, orders wheels to fit 5x120 (BMW ) pattern but brings in GM product. So luckily I know a little about these cars and the issues posed on the difference between 120 bolt pattern over the 120.65 bolt pattern.
Well after measuring the "stock" pattern and found all 3 wheels had issues on being "in spec" and setup wheels both with and without rings, and by simply using a torque wrench.
So far, I have yet to see no reason why, with eccentric mounting rings, it will pose no basic issues, especially if you check your pattern, and the actual straightness of wheel studs cannot be done safely. NUT I would recommend using new pressed in wheel studs of a quality brand(ie NAPA,Carquest,Dealer) or acceptable aftermarket brand.
No difference and honestly I even measured the stud tips on one with old stock pattern rims and new rims and the pattern stayed nearer to even both rims.
Even with a 0.013" difference on each stud, they honestly never moved more than maybe half that, ie they merely "flexed"0.006" .
Heck I would say that your running them down with an impact would do more damage than the actual pattern change.
Just some observations from a guy trying to measure the difference.


Oh yeah watch your Hankook, Kuhmo,and any other popular tires as many are going to China for production and quality is deplorable. A set of Hankook Dynapro AS made in Korea, pop onto rims nicely, and ride great, same type truck same tire but all 4 made in China, owner kept them for 4 days. He now had Bridgestone Dueler HL Alenza and says it rides better than Michelin's .
He put the Hankooks on as they were stock.
Thanks for the info...we have been trying to figure out how to get some rims on the cheap, and even used, and to know that bmw wheels could work is great to have an option.

Rhino
11-08-2009, 05:48 PM
I was pondering this for months before making a decision.
I decided it was worth a shot, so I bought a set of 5x120 wheels for my 5 x 4.75 pattern. I mounted them up for a test fit. As I removed them I found something interesting. There is a definite difference in the marring, erring toward the outside diameter of the wheel. If I have a chance, I'll post a picture of them after one mounting.

Whether or not it causes enough stress to cause an issue, I don't know yet. After walking through it first hand, there's a much more significant difference than I originally expected.

I'm not saying it's a good or bad thing to try. Heck, I'm doing it myself. I'm simply saying to keep in mind that there is a difference, regardless of how little it may be.

jturkey69
11-08-2009, 08:39 PM
I was pondering this for months before making a decision.
I decided it was worth a shot, so I bought a set of 5x120 wheels for my 5 x 4.75 pattern. I mounted them up for a test fit. As I removed them I found something interesting. There is a definite difference in the marring, erring toward the outside diameter of the wheel. If I have a chance, I'll post a picture of them after one mounting.

Whether or not it causes enough stress to cause an issue, I don't know yet. After walking through it first hand, there's a much more significant difference than I originally expected.

I'm not saying it's a good or bad thing to try. Heck, I'm doing it myself. I'm simply saying to keep in mind that there is a difference, regardless of how little it may be.
I figured into that as well, and am also wondering about the differences in aftermarket wheels. I will definitely keep that in mind

MonzaRacer
11-08-2009, 10:04 PM
so a 5 x 120 is different than 5 4 3/4 or 5 x 120.65 the difference per wheel stud turns out to be 0.013".
Now IF your wheels are hub-centric or can use hub-centric rings I dont think anyone will have problems using them.
IF you ever measure the actual "bend" of wheel studs you would never believe how much difference there is.
OH and using silver (nickle based) antiseize is allowed and proper torque wrench and use star pattern and keep track of them for first few drives.