I drove into a new well site to scout a pipeline route today and I must have driven over something nasty hidden in the mud because when I got home and did a walk around I notice no tire pressure on the inside driverside rear. Did the tire change and found a 3 inch rip in the sidewall. Drove 200 kms home that way and never noticed a thing. Gotta love having two spares mounted and ready! Good thing I wasn't heavy today. Now I got a reason to go buy some decent tires!