How I can determine the cause of the tire sidewall cut
Hi, I have a Nitto Terra Grappler tires 315x75 / r16. Around 2000 miles and one month of use.
Yesterday, I went to Rausch Creek to run some trails on the snow. Like is usual, I down the tire air pressure up to 20 lbs. after a funny day I back the tire air pressure up to 36 lbs.
I drive to home around 50 miles on the highway, and no problem.
This morning, I found one of my rear tire totally flat, my first impression was that maybe the valve stem was broke by the ice, and the air come out slowly, but after check the tire on the local tire store, the guys told me that can not fix, because the tire have a sidewall cut "a very clean cut" around 3/8" long, this guys said that it was a tire defect.
I bring the tire to the tires store that I bought just 1 month ago, with the intention to claim the warranty, but the vendor talk that is not a defect of the tire that follow his experience the cut was by a pocket knife, and the vandalism is not cover by the warranty.
My question is, there are any way to determine if the cut was made by a pocket knife or is a really tire defect? for me is difficult to believe that was made with a pocket knife because, I live on a very quiet neighborhood.
Please let me know if anybody have a similar experience?
What do you think, is possible that a tire defect can have a so clean cut?
Tomorrow I will try to post the picture.
Learning how mudding on a new lands