Since my 2022 L5P (CC/SB) was practically brand new the rear brakes squeaked horribly... at 50,000 miles the rear brakes were smoked, metal on metal with the front brakes being practically new... I don't tow heavy, a 10,000lb trailer maybe for 1,000-2,000 miles of the 50k. I just swapped new rotors and new pads in the rear this afternoon oh and one new caliper (passenger side rear). The caliper that was switched started leaking from the lower piston seal which resulted in my losing all braking (scary)... Back to the initial question, why wear so quickly?