Hmm you're responding to a thread from 2012.
Yes, on the Freelander 1 new tyres are supposed to go on the rear axle. All four tyres should be the same size, brand and inflation. A tyre pressure monitoring system is a good idea and I've fitted one to my 1998 FL1.
There is lots of info' on here about the Viscous Coupling Unit [VCU] on the prop' shaft. These 'stiffen' with age/use. Ideally when the front wheel/s start to rotate faster than the rear wheels the silicon fluid inside stiffens and 'locks up' allowing drive to go to the rear wheels = 4WD. When all wheels are again turning at the same speed that fluid relaxes and the vehicle reverts to FWD.
As the VCUs age... the silicon fluid inside thickens / stiffens and drive power can be transferred to the rear when it strictly isn't required. In addition, if that fluid has thickened and/or if the rear tyres are smaller due to miss-matched or worn tyres then 'drive' is sent forward. A 'good' VCU will allow for some slippage but an old/er one will send that drive power forward to the transfer box [= Internal Reduction Drive / IRD] and will cause it to fail internally = very expensive!
So - matched tyres in brand, size and inflation is very important on the FL1.
Your VCU can be checked - there is lots of info on here about that. The simplest test is to slowly drive it in circles in a large paved carpark. Both forwards and backwards [1st & rev gear] at idle speed [= no throttle]. Do it on both steering locks. If the car stalls or if feels as if the hand brake is on then it's quite likely that your VCU has stiffened. Others use the 'one wheel up test = OWUT. A time for the bar to move down to the horizontal of under 30 seconds is desirable - over a minute then things are not right, 1 & 1/2 minutes+ means it probably best to remove the prop shaft assembly to protect the IRD.