I have just bought a 2007 90 Defender that has BF Mud terrains fitted. These are too off road orientated for my use which will be 70% road and off road use basically towing a horse box in fields and driving around farm fields. I was thinking about the BF All terrain, is this a good option? ALso, what is the correct size for the 16 inch alloy? Is it 235 70 or 235 80? Cheers