Best way of cutting thick tile

[Fallout]

I have this tile to cut I want to take 50mm off one side. I have a scorer cutter and a wet one with a diamond blade. What's the best way of cutting this to avoid chipping etc. Thanks

 

[DAZB]

The scorer will not make any impact on that thickness so you need to use a diamond blade on either a large tile saw or with a grinder / Stihl saw and clamp a straight edge to it for accuracy. Keep it wet whilst cutting with either option.

 

[Fallout]

Thanks it's one tile above a basin will be 550mm by 250mm. What would be best to stick it with?