Have you checked the AGE of your trailer tires recently?

[Rara Avis]

DOT Code
The DOT Code is an alphanumeric character sequence molded into the sidewall of the tire for purposes of tire identification. The DOT Code is mandated by the US Department of Transportation. The DOT Code is useful in identifying tires in a product recall.

The DOT Code begins with the letters "DOT" followed by a two numbers or letters plant code that identifies where it was manufactured. The last four numbers represent the week and year the tire was built. A three-digit code was used for tires manufactured before the year 2000. For example, 178 means it was manufactured in the 17th week of 8th year of the decade. In this case it means 1988. For tires manufactured in the 1990s, the same code holds true, but there is a little triangle (Δ) after the DOT code. Thus, a tire manufactured in the 17th week of 1998 would have the code 178Δ. After 2000, the code was switched to a 4-digit code. Same rules apply, so for example, 3003 means the tire was manufactured in the 30th week of 2003.

 

[CurlyDave]

Paul poses a very good question.

I know from RV experience that many tires on low-mileage equipment will "age out" before they wear out. Sidewalls will start to check and crack. Even though there is plenty of tread on the tire, it is too old to be really safe.

 

[wkpoor]

I've seen tires that still have the teets all around and where age cracked. On the other hand I have a 52CA with original front and rears 100% tread life left and no cracks. It was always stored in a dark heated garage.

 

[BobRip]

I've seen tires that still have the teets all around and where age cracked. On the other hand I have a 52CA with original front and rears 100% tread life left and no cracks. It was always stored in a dark heated garage.

I expect that sunlight has a big affect on aging of tires. UV damages a lot of things.