Thread: Underbody spare tyre - what can fit???

I'm looking at fitting a set of 265/50R20 AT3 Toyo tyres to my L320.
Having just dropped the 19" reduced size spare to have a look, I wonder if the new size will fit under the rear of the car???
I'm not too fussed if I need to "air it down" but was wondering if anyone has a real world case about how well it will fit/not fit!

As an aside, the reduced size spare is on a 19"in - why is it speed limited to 80kph? I'm guessing because it is a different size to the rest of the tyres, but the rim looks like one of my old Discovery rims, only in 19in.
I'm not spending the money on more rims, so this question is purely theoretical.
Thanks
Alan in Adelaide

Should go straight up underneath without a problem.