Not sure how old your tires are? No worries — this is a common issue and we get asked this question all the time! Let us show you exactly how to find out.
The U.S. Department of Transportation (DOT) National Highway Traffic Safety Administration (NHTSA) requires that Tire Identification Numbers be a combination of the letters DOT, followed by ten, eleven or twelve letters and/or numbers that identify the manufacturing location, tire size and manufacturer’s code, along with the week and year the tire was manufactured.
How to find the DOT number on your tires
If you look closely at the side of each of your tires, you’ll see a bunch of letters and numbers. While this may just look like a confusing jumble, it’s actually useful info.
The last four digits will be the week and year your tire was made. The tire above was made in the 26th week of 2013.
For tires manufactured from 2000 to present
The date of manufacture is the last four digits of the DOT code. The first two digits are the week of manufacture, and the last two digits are the year.
For tires manufactured before 2000
The date of manufacture is the last three digits of the code. The first two digits refer to the week within that year.
Seeing an incomplete DOT number?
If you look at the tires sidewall and see a DOT number that appears to be incomplete, that’s because the DOT’s current regulations require the entire number to be branded on only one sidewall, while the opposite sidewall is branded with just the first few digits. To see the entire DOT number, just look on the other sidewall.
Basic Tire Care
There are two primary factors that affect tire life: proper application and good maintenance.
To know if your tires are the right ones for your motorhome, it’s important to compare the fully loaded weigh of your RV to the weight rating of the tires. Ask your RV tire dealer or the RV tire manufacture for a weight rating chart for your tire brand and model. Most manufactures also have these charts on their web sites.
When it comes to maintenance, keeping your RV tires inflated to the proper pressure is the most important thing you can do to insure their long life.
The maximum pressure allowed for a tire is embossed on the side wall. That’s the maximum pressure when the tire is cold. It’s okay for it to be over that by as much as 10 psi if tire pressure is checked while hot. The proper pressure for your RV tire may not be the maximum tire pressure. The right pressure is determined by the weight carried by each tire on the RV and the pressure recommend by the tire manufacture for that weight.
Bottom line, find your date code and inspect your tires regularly to ensure you are always safe on your adventures!