Thanks for the info’ I’ll have a trawl. May just have to get used to the harsher ride. I have a pal who downsized his wheels on a VW Touareg and said it made a difference, but that wasn’t sitting on air. I was a bit naive I suppose. I thought the SQ5 would be a near replacement for the A6 Allroad bi-turbo, but not so. On main roads it’s brilliant - ah well, a first world problem!