- Jun 7, 2020
So it's a racket! Are regular passenger car tires too stiff or too soft to use on trailers? Seems like most vehicles now have tow ratings far below the weight of an average car, so average car tires ought to be safe to use. Maybe?Despite mileage and tire wear most/many trailer tires are obsolete in approximately 7 years. They will not pass a vehicle inspection in most/many states. They have a code on the side of the tire that gives the approximate date and the manufacturers have the information of how long the tire is good for. I have 8 trailer tires with little mileage virtually new tread and are illegal on the road due to age.