BMW X1 E84 Runflat Tyres

[turbo power]

I recently drove a BMW X1 2.0D M Sport 2013 model.
The car had the 19 inch BMW OEM alloys fitted with runflats.
I found the steering very heavy and wanted to ask if by changing to normal tyres will it help eradicate the heavy steering?
Any input would be greatly appreciated.

[X5Sport]

Unlikely - based on experience with my E53 when I went the other way.  It made no difference to the steering at all.