The arguments about the effect of bigger tyres were based on the effect of the VSS(vehicle speed signal) input for the engine management as the whole fuelling strategy was mapped for standard dimension tyres as a certain VSS should match a certain driver demand and load feedback... i'm not gonna' keep the whole complicated theory here, each for his own but my advice is to not compare the LR with other makes which have different mapping or with tractors , those vehicles with same powertrain and more power are "calibrated" for that from factory, bigger tyres are like you drive the vehicle fully loaded or towing something all the time = higher EGTs and that means premature wear, believe it or not.... if you want to be on the safe side get your vehicle remapped as the management to be addapted for those tyres...then you'll feel the benefits
My friends call me Fery
2000 Discovery Td5 ES manual
Hawkeye v.6, Nanocom EVO,
VDM UCANDAS, oscilloscope
if you think my english is peculiar it means you didnt hear my japanese
ALL MY ADVICES ARE BASED ON MY OWN KNOWLEDGE AND MY WAY OF UNDERSTANDING THE DESCRIPTION AND OPERATION OF SYSTEMS... I'M NOT A LAND ROVER TRAINED SPECIALIST JUST AN ADDICTED ENTHUSIAST.