I'm wondering if anyone can explain this to me. I just put some 38 x 12.50 Bias ply TSL's on my Blazer. The tires are pretty loud, kind of sounds like you are riding in an airplane going down the road. I also have a set of 44 x 18.5 Bias ply TSL's on my Jeep. It seems that the 44's aren't really all that noisy, in fact I would say they are quiet compared to the 38's on my blazer. Why would this be? Is it because the voids are larger on the 44 than on the 38? I'm not complaining that the tires are loud, I expect these to be fairly loud, but I'm really curious why the bigger tire seem quieter. Anyone got some thought as to why this is?