Just ordered a pair of 225/40 18 Michelin pilot supersport tyres for my fr to replace the oe bridgestones.Will be fitting them when I change from the winter tyres. Were only about £20 more expensive per tyre than a conti or Goodyear and seem to get good reviews. Is it overkill on a diesel? I do intend either remapping or fitting a tuning box so will have a reasonable amount of power.