Richard at Totnes and South Hams Tyres knows all about them - been with them 20 years wires on a 4/4 Sport and MMC LIghtweight Centrelock alloys on my Plus 8., He started off in the RHD Unit but quickly spread to the next door one and has two mobile lorry and Tractor tyre vans on the road.
He put a couple on the rear of the Sport earlier this year, I get them to do it outside (balancer inside) as there are some gradients to encounter in the workshop and they hand you the spanner for a tightness check and always ask you for the psi you want dialed in and they ask you to show them the jacking points.
They are a totally professional outfit and do tractors on farm so well use to agricultural Morgana...