This is probably more relevant for diesel 80's not petrol ones sorry.
I've not had the spare wheel mounted under the back of my 80 since I fitted an outback accessories SWC80R swing-away spare wheel carrier and later on got jiggy and replaced that with an outback accessories TWC80 twin wheel carrier and rear bar.
A lot of Aussies fit a long range tank to their 80 (and other 4wd's) when they relocate the spare wheel(s) since then there is a bit under-utilised space.
Obviously the penalty is a lot more weight. Regardless of where the spare wheel lives, the weight of it is still part of the standard 'kerb weight', but anything added (like a new rear bar and carrier) is not.
Long range fuel tanks made to take up the left over space where the spare wheel is mounted ex-factory add anything up to 150 kg additional weight. So adding a rear bar and wheel carrier PLUS a long range tank is adding around 200 kg additional weight penalty.
The benefit however is that energy density of diesel fuel is high (much better than petrol/gasoline). A standard 80 series with dual tanks has a 90 L main tank and 50 L subtank. Most of the long range tank options provide an extra 100 L of fuel carrying capacity over the std sub-tank so you end up with about 250 L in total of fuel carrying capacity instead of the standard 140 L.
Who's used long range diesel tanks and what are the real world pro's and con's of them? One side-effect of not having the spare wheel underneath is very easy access to everything under the back, and a bigger fuel tank would block up most/all of that again.
I've not had the spare wheel mounted under the back of my 80 since I fitted an outback accessories SWC80R swing-away spare wheel carrier and later on got jiggy and replaced that with an outback accessories TWC80 twin wheel carrier and rear bar.
A lot of Aussies fit a long range tank to their 80 (and other 4wd's) when they relocate the spare wheel(s) since then there is a bit under-utilised space.
Obviously the penalty is a lot more weight. Regardless of where the spare wheel lives, the weight of it is still part of the standard 'kerb weight', but anything added (like a new rear bar and carrier) is not.
Long range fuel tanks made to take up the left over space where the spare wheel is mounted ex-factory add anything up to 150 kg additional weight. So adding a rear bar and wheel carrier PLUS a long range tank is adding around 200 kg additional weight penalty.
The benefit however is that energy density of diesel fuel is high (much better than petrol/gasoline). A standard 80 series with dual tanks has a 90 L main tank and 50 L subtank. Most of the long range tank options provide an extra 100 L of fuel carrying capacity over the std sub-tank so you end up with about 250 L in total of fuel carrying capacity instead of the standard 140 L.
Who's used long range diesel tanks and what are the real world pro's and con's of them? One side-effect of not having the spare wheel underneath is very easy access to everything under the back, and a bigger fuel tank would block up most/all of that again.