issues with running spacers for rims

[fredmeister]

Are there any issues with running big spacers on the car to allow using incorrect or better stated not optimal offset rims?
Was not sure if there were issues with overloading bearings or some such to warrant not doing it.
Getting used rims online is often cost effective to having a set custom made in the optimal offset to avoid the need for large spacers.
Running spacers is bad enuff in that it is an extra cost involved.

Fred

[930turbo]

The spacers themselves should not create any adverse effect on bearing loading if properly applied. Ideally, you would like the track width to be original OEM spec with the replacement wheels and spacers reproducing the correct stack-height. (if the wheel has +25mm negitive offset, add 25mm spacers = nil)Any time the wheel center is moved away from the bearing center there is a risk of increased bearing load. The giant 930 rear wheel bearings may not be an issue but the two-row 911 models might not survive with great longevity.

[Miguel Antonett]

Try as much as possible to maintain the OEM spacers set up.

[Miguel Antonett]

Try as much as possible to maintain the OEM spacers set up.

[NathanUK]

What you want is the replacement front wheels centre when viewed from above to be exactly where the stock wheels were. This is for geometry reasons and also for wheel bearing kindness.
As for the rear the geometry is not important at all and as stated the bearings will take it anyway, get them to look right.

I would remove all the factory spacers and then buy spacers of the hub adapting type, they come with the extra nuts needed and do a good job of keeping the wheel centered when viewed from the side.