Everything You Need to Read on a Tire’s Sidewall | Truck Accessories Explained

Everything You Need to Read on a Tire’s Sidewall | Truck Accessories Explained


Hey guys, Ken here with 4 Wheel Online and
today I’m going to walk you through every single bit of writing on the side of this
Nitto Trail Grappler tire and explain what it all means. If you learn something from this video, make
sure to hit that subscribe button! First things first, this is a 37 inch Nitto
Trail Grappler tire. We know this because it’s written in huge
lettering down the side. The size is 37×13.50R20LT, that means it’s
a flotation rated tire as compared to a metric rated. If you want to learn more about sizing of
metric and flotation rated tires be sure to watch our video that goes over every piece
of it. Next up we have the DOT Code. This will show us when and where the tire
was made, and can be very important in judging the age of a tire. This tire’s DOT code is 73TE (6PW3115). That may seem confusing and convoluted, but
I promise, it’s not actually that hard. The 73 is the manufacturer and plant, in this
case Toyo Tires’ Georgia plant. (yes, Toyo owns Nitto if you weren’t aware) The TE is some sort of sizing code that we
couldn’t find much information on and isn’t super important for a majority of people. Next we have 6PW, which is the manufacturer’s
identification number, another code that isn’t very important to us. The last four digits, however are very important. They represent the week and year that the
tire was made. This tire was made in the 31st week of 2015. Over here in smaller text, and in more of
a standard size that you’ll see on most tires we have the sizing info again, but this
section includes the tire’s load capacity, speed rating and ply rating. The load capacity on this tire is 127, which
charts list as 3,858lbs. We can see this confirmed by even smaller
text that reads “Max Load 1250 KG or 3860 lbs.” Following load capacity is a single letter
representing the tire’s speed rating. This tire has a Q, which means it’s rated
to 100 miles per hour. The 10 P.R. is the Ply Rating, so this tire
has 10 plys. You can also confirm this from the Load Range
E listed right here. The last two pieces of information we need
to look at are the max PSI, in this case 65 PSI and the M + S designation which stands
for Mud and Snow. Do note that this tire doesn’t have the
Mountain Snowflake graphic to designate that it’s rated for severe snow use. We’re nearing the end of this video, but
did you notice the marking on the side of this tire that prevents it from being used? This tire has a huge slash on the sidewall. While you’re reading the info on your tire,
make sure to look out for dry rot and other damage. Now, I know we just went over a bunch of codes,
and only spoke about this tire in particular, but you can find just about everything you
need to know about tire codes on Wikipedia. We’ve got a link to the article in the description
if you want to give it a look. If you learned something from this video we’d
appreciate it if you subscribed! Until next time, I’m Ken with 4 Wheel Online.

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  1. Doesn't the ply rating just indicate load range, and not any direct indication of the actual number of plies? The Trail Grappler has a three-ply construction according to Nitto's web site, in this particular case, but it is 10-ply rated for load capacity.

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