the old tires LT 235/85 R16C M&S were nice, but difficult to get. A replacement tire costs about 270 S$ (in 09/2013).
The 235/85 R16 look nice because they appear to be very large. The Defender looks like a big toy car with them. But they scratch on the inside of the mud guards, when taking a narrow turn.
I got 4 cheap new ones for S$ 600 in a much more common size: 245/70 R16
I lose about 2,5cm clearance underneath the gear case but this is ok.
One of the old tires will be mounted on a new steel rim (S$ 60) and it will serve as a spare wheel.