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I am finally realizing that I am talking to a totally different audience here. I am used to a community that refers to 285s interchangeably as 33s.

Here is the math for a 285/70R18: Determine the sidewall height by converting the width from mm to inches: Use 285mm divide by 25.4 mm/inch = 11.22 inches Then multiply by the aspect ratio of 70%: 0.70x11.22 inches = 7.85 inches There are 2 sections of sidewall - 2x7.85 = 15.7 inches Total...

Exactly.

The is the aspect ratio of 70%. It is the same on both as noted above.

Okay, lets do the math. Lets assume a 70 aspect ratio is a constant. A 265/70R18 is 32.6 inches tall. A 285/70R18 is 33.7 inches tall. They both have a 70% aspect ratio. The only number to change is the width. The 285 is 3.38% taller than a 265. Now back to original purpose of this thread...

Is a 265/70R18 the same height as a 285/70R18? No. The width has a direct relationship to the height. Therefore, changing the width does change the speedo.

I hope you are joking. Or do you really not understand how to calculate a tire height?

I follow the Toyota schedule because I will have it 2 years from now. I sell them before the warranty expires.

You are going slower and the mpg is reporting higher than actual too. The 4Runner do the same thing. When I swapped my 265s for 285s on my 4Runner, the speedo was corrected. I tell myself that they designed it this way on purpose because they know many of us will be up-sizing to 285s.

Yep. Wise people tell me I should have been saving to retire instead of buying Toyotas. But I have no regrets.

I didn’t change the oil. I took it for service and they told me they will change it at 10k.

I have dreamt of owning Toyota 4x4s since the mid 1970s. I bought my first Taco in 2008. Since then I have owned Tacos, Tundras, 4Runners and an FJ Cruiser. The LC 250 caught my attention because it gave me a retro vibe. I bought it in September and put 5,000 miles on it. I am enjoying it so...