stumpy1
MB Enthusiast
I've read issues of 5-series fitted with run flat tyres and how that badly effects the handling. Was this your finding also? I am presuming the standard SE had normal tyres and the M-sport has the larger run flat tyres.
We have an E60 535d with runflats and yes they give a slight 'edge' to the ride but only compared to the E39 Sport which rides superbly.