Hi all,
...285 will most likely rub on the upper suspension arm - 265 JUST about clears it ....at R18-265/65 (/70 might already be too much) on the original R18 rims....
I have a curious problem:
It seems I cannot get the tire/rim combination (OEM-18 wheels) balanced....
OEM-R18 rims - BF-Goodrich AT R18-265/65 tires
So far I went to 4 different shops:
Changed the tires and did a complete alignment job (was within spec to start with...). Furthermore the tech and the tire-shop agreed to play:
WE checked each rim only for unbalance and noted the result on the rim. After the first run with the tire on, we would move the tire to cancel the imbalance of the rim and reduce the needed amount of balance weights - this seemed to work fine.
Then we ran into trouble with properly balancing the wheels! No matter which program the tech used, the amounts of weight were going way out of hand! Finally we resolved to use the simplest method.
By chance after balancing one wheel to 0.00, we took it off the machine, put it back on the balancer and ...got an out of balance reading again!! NOW this is where I got sceptical!
I was sure the machine was defective....
A simple thing like a wheel, without any moving parts should be rather simple to balance!
[In my job I frequently have to track & balance helicopter rotor systems - talk about a little more complex systems!]
Maybe I complety miss something here.....
After this I went to 2 more shops with supposedly new balancers (all the same brand ... COATS), but the story is/was the same! - Remove old weights, balance to 0.00, same whobble starting at 100km/h. Removed tires to see if something was inside - nothing...
Just came back from the 4th shop now, with the newest and most sofisticated mschine I ever saw - a COATS (like the others but really the top model) - the tech couldn't believe it either - 0.00, take the wheel off and put it back on and we get a imbalance again!! (...and not small 0.something numbers, but from 1.50-2.00). Just did the front wheels to see the results - both wheels run beautifully round, no whobble side/side, no jump on the tire.... - on the Rok and now I get the whobble in the steering at 85km/h!!
I am out of ideas - and this whole thing is spooky to me!!
Unless there is something about these balance machines I don't know....
I installed a OME front (HD for bumper and winch) and a HD rear with one leaf removed.
With this setup I ran the original tires for some 10000km (looked ugly, but I was not about to throw away the OE-tires because of looks....)
The OE-tires/wheels ran perfect with the lift kit.
So - the questions are:
1. WTF is going on with my wheels?
2. Is there anything about tire balancers I don't know?
[In my world - IF a wheel is balanced to 0.00 - it should not matter if you take it of the balancer and put it back on or on a different balancer - if it is balanced 0.00 - it is balanced! and is balanced! and is balanced!!! It should indicate 0.00 again and repeatetly, shouldn't it??]
3. What to do next? Alignment is good, tire pressure is good? Change alignment numbers??
Anyone of you guys are a tire/rim/wheel guru??
Love the traction, stance, looks, but whobbling now starting at 85 km/h is NOT what I want to have to live with!!
[VW dealer doesn't comment as it is NOT their tires and NOT the original size]
Cheers all,
thjakits
...285 will most likely rub on the upper suspension arm - 265 JUST about clears it ....at R18-265/65 (/70 might already be too much) on the original R18 rims....
I have a curious problem:
It seems I cannot get the tire/rim combination (OEM-18 wheels) balanced....
OEM-R18 rims - BF-Goodrich AT R18-265/65 tires
So far I went to 4 different shops:
Changed the tires and did a complete alignment job (was within spec to start with...). Furthermore the tech and the tire-shop agreed to play:
WE checked each rim only for unbalance and noted the result on the rim. After the first run with the tire on, we would move the tire to cancel the imbalance of the rim and reduce the needed amount of balance weights - this seemed to work fine.
Then we ran into trouble with properly balancing the wheels! No matter which program the tech used, the amounts of weight were going way out of hand! Finally we resolved to use the simplest method.
By chance after balancing one wheel to 0.00, we took it off the machine, put it back on the balancer and ...got an out of balance reading again!! NOW this is where I got sceptical!
I was sure the machine was defective....
A simple thing like a wheel, without any moving parts should be rather simple to balance!
[In my job I frequently have to track & balance helicopter rotor systems - talk about a little more complex systems!]
Maybe I complety miss something here.....

After this I went to 2 more shops with supposedly new balancers (all the same brand ... COATS), but the story is/was the same! - Remove old weights, balance to 0.00, same whobble starting at 100km/h. Removed tires to see if something was inside - nothing...
Just came back from the 4th shop now, with the newest and most sofisticated mschine I ever saw - a COATS (like the others but really the top model) - the tech couldn't believe it either - 0.00, take the wheel off and put it back on and we get a imbalance again!! (...and not small 0.something numbers, but from 1.50-2.00). Just did the front wheels to see the results - both wheels run beautifully round, no whobble side/side, no jump on the tire.... - on the Rok and now I get the whobble in the steering at 85km/h!!
I am out of ideas - and this whole thing is spooky to me!!
Unless there is something about these balance machines I don't know....
I installed a OME front (HD for bumper and winch) and a HD rear with one leaf removed.
With this setup I ran the original tires for some 10000km (looked ugly, but I was not about to throw away the OE-tires because of looks....)
The OE-tires/wheels ran perfect with the lift kit.
So - the questions are:
1. WTF is going on with my wheels?

2. Is there anything about tire balancers I don't know?
[In my world - IF a wheel is balanced to 0.00 - it should not matter if you take it of the balancer and put it back on or on a different balancer - if it is balanced 0.00 - it is balanced! and is balanced! and is balanced!!! It should indicate 0.00 again and repeatetly, shouldn't it??]
3. What to do next? Alignment is good, tire pressure is good? Change alignment numbers??
Anyone of you guys are a tire/rim/wheel guru??
Love the traction, stance, looks, but whobbling now starting at 85 km/h is NOT what I want to have to live with!!
[VW dealer doesn't comment as it is NOT their tires and NOT the original size]
Cheers all,
thjakits

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