I have an ex mod 110 with 2 michelin 4x4 or tyres and two ****e ones.

The michelin ones are of size 7.50 r 16 c 114/116N

the rear are 7.50 16 will these tyres fir the rear wheels? they are 116N but not 114/116N?

mytyres.co.uk - Details: Michelin 4x4 O/R XZL 7.50 R16C 116N

cheers . im new to this.

While they are one of the best tyres produecd they are also the most expensive! The 116N is the weight and speed rating which will not matter as it is very close.
You might be better contacting a military surplus company such as Anchor supplies to get some part worn tyres to save on cost. Also check ebay as I have seen these tyres on wolf rims for £100 each that is very cheap.