Good afternoon Dave and thank you for the reply.
so us young folks enjoy keeping our cars in good condition, since I bought this car twelve years ago the tyres have always been changed in two’s as this is possibly from the previous owner, I have never had transmission problems apart from upgrading the actuator nylon gear, also upgraded the double vanos seals. and the disa valve pin , however looking at realoem my 19” y spoke wheels have been discontinued and these ran on staggered p zero rossos, realoem now shows both the 235 and the 255 tears as p zero asimm but I cannot find these tyres which end as w95 front or w96 rear, I can fi a rear ending as y96. So still trying for answers from bmw and Pirelli, so will keep you posted.
regards Trevor