3 Door Models

225/75 R15
Up to 2 Passengers
Front.....................................................25 psi (1.7 bar)
Rear.....................................................25 psi (1.7 bar)
Fully Loaded
Front.....................................................25 psi (1.7 bar)
Rear.....................................................35 psi (2.4  bar)

235/70 R16 and 255/65 R 16:
Up to 2 Passengers
Front.....................................................29 psi (2.0 bar)
Rear.....................................................32 psi (2.2 bar)
Fully Loaded
Front.....................................................29 psi (2.0 bar)
Rear.....................................................36 psi (2.5 bar)

5 Door models

225/75 R15
Up to 3 Passengers
Front.....................................................25 psi (1.7 bar)
Rear.....................................................25 psi (1.7 bar)
Fully Loaded
Front.....................................................25 psi (1.7 bar)
Rear.....................................................35 psi (2.4 bar)
235/70 R16 and 255/65 R 16:
Up to 2 Passengers
Front.....................................................29 psi (2.0 bar)
Rear.....................................................32 psi (2.2 bar)
Fully Loaded
Front.....................................................29 psi (2.0 bar)
Rear.....................................................36 psi (2.5 bar)

Frontera B series

235/75 R15
Front....................................................29 psi (2.0 bar) 
Rear.....................................................29 psi (2.0 bar)

245/70 R16
Front.....................................................26 psi (1.8 bar)
Rear .....................................................26 psi (1.8 bar)

Additional guide, please use this link

www.dunloptyres.co.uk/site/tyres/4x4/pressureGuide/