Sunday, Jan 24, 2016 at 20:31
It's really irrelevant whether the tyre is new or not, still weigh about the same.
Dual rear wheel carrier and rear bumper fitted approx. $ 1500.00.
Wind resistance and lower fuel economy will be negligible with tyre on roof.
UV exposure will also occur when mounted on rear, probably worse, as top exposed more than bottom. Rubbish bag wheel cover solves the problem.
Load on
suspension will be much the same whether on roof or on rear.
How often do you need to
check tyre pressure on your spares?
Most 4wd roofs are certified for 200kg loads. Agreed that the less weight on top the less load there will be over corrugations. I regularly carry 100lt water and 100lt fuel on top with recovery gear in Al toolbox with no issues. Vehicle has never fallen over and roof has never collapsed!
Simpson desert, Gunbarrel, CSR,
Gibb River, Anne Beadell, Connie Sue and
Cape York all from
Perth.
You just need to drive to the vehicles capabilities.
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