Originally Posted by Jeep2Xfire
Those numbers for UTQG are compared to a generic tire having a value of 100. So a tire with a treadwear rating of 420 will last 4.2 times that of a generic or the 3500 treadwear rating would be 3.5 times that of a generic tire.
The problem with the UTQG is that every manufacturer choses independently where that 100 baseline falls. So 350 at one manufacturer may not be equal to 350 from another.