Originally Posted by geeman789
Originally Posted by Hitman70
The problem is here nobody balance wheels by lugs… I called many tire shops and nobody even know it exists… They all balance by hub…
If I buy 78.30 to 71.5 hub adapters, then I can balance by hub?
You don't seem to understand what lug centric means ... most after market wheels are lug centric, with a centre bore (hole) that is larger than the cars hub. Tightening the lug nuts centres the wheel. Cars have many different sized hubs, and a wheel maker would need dozens of different part numbers to fit each car exactly. Instead, they make the centre hole larger, so it fits on a larger number of cars.
Most balancing machines balance the wheels using the centre hole. Bigger or smaller, it should not cause any problems balancing a wheel / tire assembly. There are two possible problems with lug centric wheels. First, if the bolt pattern circle is drilled incorrectly, the wheels will not be centered and a vibration may result ( very rare ... ). 2nd, when tightening the wheels, it is possible that the wheel doesn't self centre as the lugs are tightened, especially if someone doesn't tighten each lug slowly, working their way around the wheel. And we are talking about very small amounts ... fractions of a millimetre, but again, a vibration could show up.
All center ring adapters do is help centre the wheel during installation on the car hub, reducing the likelihood of tightening the lugs without them self centering, and having the wheel be off centre. Usually they are plastic, and have no load bearing purpose whatsoever.
As for the 4 oz of weight, if it bothers you rotate the tire 1/2 way around the wheel, and balance again ... sometimes when the tire gets mounted the tire heavy spot randomly ends up where the wheel heavy spot is, then you need more weight to balance the assembly. If the heavy spot on the tire is opposite the heavy spot on the wheel, less weight ( or none sometimes ... ) will be needed to balance the tire / wheel assembly.
Thanks for your explanations.
I asked this about balancing wheels by lugs, because I've read about lugcentric balancing with special adapter for lugcentric wheels, like this:
And here in Switzerland nobody have adapters like this… We only balance by hub hole.
If it's ok to balance my wheels by hub, that's good. I'll try to rotate the tires.
But my problem is, even without tires mounted, my rims already requires 60 gramm (2 oz) of weight… Seems a lot for a "naked" rim… If it's how it's supposed to be, no problem, I'll add tons of weight, just want to be sure such wheels won't damage my car.
I'll buy center hub adapter 78.3 mm to 71.50 for be sure it's perfectly centred.
And what about the 35mm offset as my car requires 56.4. No risk?