3/4 Ton Trucks Will Flip
I went back into the office last night to catch up on some work and saw a really bad accident right down the street from my shop. I am in an industrial area in North Austin and we have wide streets a...
Forum Discussion
Powerdude wrote:
The reason there is little difference, at least in that case, is because the number after the slash tells you the percent in aspect ratio height of the sidewall.
So, on a 265 tire, it is 265 mm wide, and 60 % of 265 is 159 mm in sidewall height (in the case of the 265/60R20)
If the number is 70 %, indicating, the sidewall height will be bigger (185.5 mm in the case of the 265/70R18)
Any tire below 65% sidewall to width height is generally considered a "sporty" tire, usually for racing ricer wannabees or those who generally have a wish for a firm ride.
There is absolutely no reason on a tow vehicle to have low profile (lower than 65%) tires. If you wanna get babes, there are much less expensive ways to do that.
I hope those guys who flipped that truck get sued for all they are worth (which is probably not much).
In the example I gave (also from Tire Rack), the difference in overall O/D is 0.1". Both were "E" rated the 1265/70R18 has a max load rating of 3525lbs, the 265/60R20 maxes out at 3195lbs for a 10% max load difference. As for Aspect ratio... the 18" are 7.3" and the 20" is 6.3" difference of 14% or 1" in sidewall height. I highly doubt either of the tires suggested by The Tire Rack can be classified as "sporty tire" as neither have speed ratings of V or even H. The point of the post was to show there can be little difference in overall tire diameter between a 18 or 20" rim.
