lotus791 said:
Do not use heat FFS ...ever saw one blow out if your heads near it will be messy .. If we get a wheel as badly stuck use a portapower , anchor of the body and just jack it of the rim off in 2 ticks no mess

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My indication if the use of heat was as suggested a gentle application of a heat gun, not oxy acetylene or any other extreme source, the differential expansion is used extensively to remove metallic components on interference fit.
I don't understand how you would ever get to a "blow out" using sensible application of a heat gun. The wheel would never get anywhere near as hot as it will during a harsh level of braking use in normal driving conditions.
Please if you are going to criticise others suggestions understand the reality and physics of the suggestion as it makes me for one irritated and not willing to share solutions.
And just on a side note, jacking off the body using a porta power is more likely to damage tracking,bearings and suspension geometry than to readily succeed in removing anything that is mounted on a remote section and specifically on bearings that are not designed to take hydraulic pressure in that manner.