I doubt you would notice any differences in ride or handling, but if the fronts are sticking out more you may be more likely to have rock chips on the rear fender as discussed in this thread https://landroverforums.com/forum/20...ipping-105994/.

 

Thanks for the responses gents!

 

I tried the KO2 275/55/20 on my redbourne alston‘s and unfortunately they do rub at turn.

 

Do they rub at all ride heights? Or only at the lowest height?

 

This is normal hight and there is an inch of rubbing back and front

 

Like the set up. Love the sticker on rear window. Go Blue

 

This is strange, definitely seen this size in KO2's reported as fitting, they are what I was planning on putting on the stock rims. What could be so different about the alstons that causes them to rub with the same tire? Or are the tolerances that bad on the defender?

 

Has to be the wheels, different offset than OEM, most likely.

Stock tires (assuming the offroad option) are Goodyear Wrangler All-Terrain Adeventures in 255/60r20. That makes for a tire with an overall diameter of 32” and a section width of 10.9”. By comparison, A KO2 in 275/55r20 makes for an overall diameter of 31.8” and a section width of 11.1” So roughly the same sized tires… you’re losing .2” of diameter and gaining .2” of width.

It’s true that very often section width is a far more limiting factor than overall diameter when trying to go larger without issue. But .2” is a tiny difference. So small that you might expect to see that variance just in different particular tires of the same make/model/size, if you went with one of the cheaper manufacturers with less stringent tolerances. Or even assuming all 5 tires are perfect to the millimeter, a width difference of .2” could easily be achieved just by airing down a bit. Or literally fluctuations in outside temperature.

The point is, the differences between the stock tire size and yours are so close as to be reasonably expected to fit, given that a truckmaker will make allowances for small tire size differences of fractions of an inch due changes in the weather, the need to air down, etc… Assuming the OEM wheels are being used.

I don’t know anything about the wheels you’ve selected, but I’d bet $10 the offset is markedly different from OEM wheels. A full inch of rub, front and back… It’s the only thing that makes sense.

 

His wheels might be 1 to 1.5" wider so that will make a 275/55/20 a bit bigger than a stock narrower rim.

 

My wheels specs are:
20x8.5
Offset 25
Back spacing 5.730

and when the tire was installed, as you can see in the pictures (with the BFG above) they were sticking out more than the stock wheels.

the below pictures are with the Goodyears 255/60/20.