Discovery Dumper / Tractor Tyres

Good Afternoon,

I am in need of some advise / help!

Have a old Discovery 300 on the farm, this has not MOT and will never go on the road again however I am in the market for some tyres. I have seen before you can get some tractor / dumper tyres however can anyone advise where to get them from and what size is required as I want them to fit on my 245/70 R16 Rims.

Any help would be appreciated.

Regards

Mark

id try ur local plant hire firms..depending on condition..id take a bet u would get some used ones very cheap