Thanks Karl, I just have a natural aversion to alloys because I have cracked a couple over the years, on cars on the road!
And seeing as I want to put 16 on to replace the 15's, I reckon I might as well get the steelies!
Don't. My advice would be to get the OEM Toyota 16" alloys, they're as strong as you'll ever need. I have BFG KM2's on the OEM Toyota steels, BFG AT's on OZ Racing alloys and road tyres on OEM Toyota 16" alloys. When I fit the KM2's and steels you really feel the difference, the 80 isn't as lively off the mark, and you can really notice the additional rotating mass when your slowing down, you have to apply more force than usual to stop that last 10mph - 0mph.
I bought the steels for the KM2's as I wanted a tough wheel for off road work, and kept the road tyres for normal use (the AT's were a later addition), the KM2's and steels have been to the Pyrenees twice and across the country to Lincomb on many occasions. The last time I went to the Pyrenees I vowed that I wouldn't do such a long trip on that wheel and tyre combo again, too much weight and rotating mass. Shortly after the AT's were bought for trip use.
Would I buy the steels again? No, I'd have another set of the OEM Toyota 16" alloys.
I see where your going Andy, but I would prefer steel because they are easier to fix if they get bent and don't crack either. I'm really trying to build an overlanding vehicle really, so I thought steel would be better!?
Are you planning to overland anywhere particularly tough?
The Toyota alloys have been all over, carrying heavily loaded 80's on rough roads and tracks without issue. Paul at Onelife Adventure has been using an 80 with the Toyota 16" alloys for years, and as far as I'm aware he's never had a problem. He covers a lot of rough terrain every year, and doesn't feel the need for the steels.
When you look at the OEM Toyota alloy closely, off the vehicle, you can see how thick the ali is and how much strength has been designed into it. I wouldn't think twice about driving anywhere on one.
If your planning on going remote enough that you require a 2nd spare, two steels rims is a lot of weight to be carting around.