Good info, looks like it will also fit with to hitch.

That size seems like a good size to go for offroading, 275/55/20 is not exactly the best sidewall size, but at least 1/2" more sidewall than stock :-)

 

So, I finally got ours in today and they just called and said the fronts are hitting the spindles. WTF?

275/55/20 Nitto Dura Grappler say they are the same size as the Michelin.

Of course, I do have to do practically every single thing twice . . . there is that but these are 275/55/20s.

 

I have a 275/55 R20 Yokohama AT G015 installed as my spare with the factory trailer hitch. It fits with no problem.
Also, before I bought the Yokohama tires I test fit a Pathfinder 275/55 R20 (that's Discount Tire's own brand) and it cleared the spindles. If you don't know what the spindles are (and I'm not sure if that's the correct term), it's part of the upper front suspension that's closest to the inner edge of the tire sidewall. That looks like the closest clearance location. With the Pathfinder tires there was only about 1/2 inch clearance left. I just measured the Yokohama clearance and it was about 1/2 inch also. The Yokohama tires are a little rounded on the outer and inner corners unlike the Nittos which are more squared off. Are you certain they didn't fit the 285/50 R20 size? That size would be a little wider than the 275's at the critical location that might be a problem.
If you already have the Nitto tires and do have the clearance problem you could fix it with a small thickness wheel spacer, maybe a quarter inch thick or so. You should get under there and check your clearance to be sure. Not sure how thick your wheel spacer could be without needing longer wheel studs, but I think it would be no problem. You'd only need spacers on the front I think.
Note that the Johnson Rods or other brands of rods that change the suspension height have no effect on this clearance. This clearance is directly related to the suspension components and the wheel and tire and not the clearance between the tire and the inner fender.

 

See the post by Johnson Rods. They have installed 285/50 R20 Nitto Terra Grappler tires. I don't see why those would fit and not the Dura Grapplers.

 

Yeah it's just part of the spindle assy. Spindle arm that goes up and attaches to the upper control arm.

But, in all honesty, there is less than a 1/2" clearance with the stock Pirellis on mine. I frankly did not bother to measure it ahead of time because no one has mentioned having clearance problems or needing spacers with 275s, Just 285s.

There is .8" difference between the 255 and 275 which is .4" per side so you are bound to be right on the arm with any 275 and my HSE Lux wheels anyway.

Offset is the same on my wheels as others are using. Wondering about backspace differences between wheels perhaps?

Just measured my Nitto 275s and they are within that 11.2" section width.

Hey, dudes and dudets, I just have to do things twice. It is the nature of things. Very fortunate man in so many ways.

Not REMOTELY lucky though.

 

Just FYI, I learned the 275/55 Nitto Dura Grapplers are nearly 11.5" inflated which is why they rub that spindle arm. Discount Tire took them back and I've got Yokohama Geolander G015s on the way.

 

I didn't know this until tonight, but Yokohama has a $60 rebate on those Geolandars on the Yokohama website. I found the link on Discount Tire's website.
Purchase must be made in April so if you don't get your tires installed by end of April you might want to go ahead and pay for them to get a valid invoice.