'18 Limited wheel help

And to complicate this further, take a look at this article from a tire-business newsletter

https://www.tirebusiness.com/article/19990705/issue/307059973/same-size-but-different-dimensions

 

Sizes due vary from brand to brand.

The 245/75/R17 has a lower speed rating only because of taller sidewall.

They can't dispute, other than slight between manufacturers, that diameter is diameter.

My question to those dealers and tire places would be, my 4 runner comes factory with a tire that is 245 mm in width, why is it that you want me to run a 265 mm tire which is an inch wider?

It's because they search tire size and 265/70/R17 is common for most models, but not the limited.

Here's my rims in the black.

 

I assume that, like me, anyone on this forum who keeps talking about 265/70/17s for their Limited is because we like the look (of the TRD wheels, in my case, as well as the wider tires) and there are so many more choices. As I said, I started out wanting Continental or General (Tire Rack's top two rated All Terrains), but in 245/75/17, I was forced into an LT. There's nothing hard to understand or dispute about your pointing out that the 245/75/17 offers a virtual exact size match to the OEM 245/60/20. I think the reason that possible rubbing keeps coming up is that it's the one disadvantage of switching to 265/70/17, at least for me. The tire comparison websites calculate that the 265/70/17 will produce identical speedometer reading as the 245/60/20



whereas the 245/75/17 is off a bit



They both rev very close to the 245/60/20 and, combined with the unavoidable aesthetic impulse and the much wider array of choices, interest in the 265/70/17 as a replacement for the 245/60/20 is not likely to be stopped by your very accurate and legitimate questioning of it (IMHO).

 

As exemplified by this post on another forum:

Originally Posted by Bossman I, like you, was not comfortable putting a tire on those 20" rims that was not a recommended size. When I bought my new-to-me 2011 back in 2016 and had to replace the Yokohama Geolandars, the best tire I could find at that time to meet my needs was the Michelin Premier LTX in 245/60R20.

Just this week, I had a set of 2018 TRD Off-Road (take-off) 17" rims with Toyo Observe GSi-5 265/70R17 winter tires installed. Ride is slightly different, but still very comfortable. No modifications needed, and my Limited is stock.

My next tires for my 20" rims may likely be the Toyo Open Country A/T II, as these are all-terrain tires now available in the 245/60R20 size.

https://www.toyotires.ca/tires/open-...ii-all-terrain

What was more interesting to me than the post was the responses, including one "Hooray" -- the news that someone had transcended the laws of physics and math as applied to wheels, tires, wheel-wells and fenders, like warp speed on Star Trek.