Tire size

[Tripps]

I'm sure it applies to motorcycles, too, I thought it was interesting

https://www.motorauthority.com/news/...for-the-planet

[1olbull]

At its face, this article is stupid.
It reports 20" diameter provides less mileage than 18". Then it reports that larger sidewalls are better.
How the hell can this be true when both statements are in conflict?

[Tripps]

At its face, this article is stupid.
It reports 20" diameter provides less mileage than 18". Then it reports that larger sidewalls are better.
How the hell can this be true when both statements are in conflict?

They're talking about rims. You know how people have those huge rims which leaves little skinny sidewalls? A big thing with the um, " urban folks".

[1olbull]

Title and text reads tires.

[Tripps]

Sometimes you have to parse the meaning, as you said, it doesn't make sense the other way.

[Tripps]

20" tires always go on 20" rims, I think, tire size, 15", 14", always refer to rim size, don't they?

[BREEZE]

when I bought 5 new tires for my ram pick up tire shop said they got 4 mounted and balanced but could not do the spare, tires were 20"rim factory spare was 18" with different sized tire on rim to match 20" inch on truck had to get a different rim for the fifth tire I bought guess its good though now I have 2 spare

[1olbull]

20" tires always go on 20" rims, I think, tire size, 15", 14", always refer to rim size, don't they?

Example - 240/55R16
240 millimeters is the tire cross section length.
55% is the sidewall percentage of the cross section.
R = radial and B = bias ply
16 inches is the wheel diameter.

55% = .55 X 240 = 132mm X .03937 = 5.196 or 5.2 inches sidewall height.
16" + 5.2 + 5.2 = 26.4 inches wheel/tire diameter.
Hope this helps . . .

[Tripps]

Right, that's called a 16" tire, I guess we agree.