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Originally Posted by islander  Welded together btw |
No there not ... I would explain this again, but I cant be arsed, no one listens!
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to do the same on a 6j rims, you would need 175 or 165 tyres. which would mean it drove like shit and had bugger all grip.
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Thing is though Si how is that any different to any of the wheels you have had which you have stretched tires onto which were like 7J? You can always do it to a set of 8j / 9j wheels with weak offset.
The only issue with flipping wheels is ensuring that you have the arch clearance as you gain alot of negative offset. If you do then its cheap dish.
As for the orginal question ...
As Topi says, undo the bolts, knock the centre out (if it wont budge then apply heat to the outer band).
Turn the centre over, heat the band up again if nessesary and knock it back into place - I use long bolts to guide the centre so it lines up perfectly with the set bolt holes.
Get a mate to tig up the old valve hole and grind the weld down, then drill a new one on the outside of the rim and fit a bolt in tyre valve.
Common misconception is that the wheels are welded together - if you look at the photo of the ones above that I did you will see that its only the band sections that are welded and not the centres. The centres are only held in by bolts or + possibly an interferance fit so come apart easy enough.