Been looking at th handbook , recently , regarding load ratings , on wheels , and tyres , and it seems a minefield ..!! Tyres , mainly . It seems the wheel rim rating needs to be a minimum , realistically , of about 750 kg . However , the tyre rating seems to go up , the wider , and lower aspect you choose , incrementally .. The tech section on the forum does not seem to reflect the oem figures , in tyre suitability , with figures of 97 being minimum , but on calculating , with oem data , the minimum aspect ratio is in the 55 region , and that is the minimum ratio it seems you can get a suitable (legal) load-rated tyre ... at 101 -102 ..!! Max , it seems , is 225 that is avail at that rating ..!! Otherwise , its car tyres , that are probably not legal , or safe ..!! Am I right , or wrong , in my thinking ??