Try again?
I've owned two sets of Toyo M55 tires and never really 'loved' them, but I'm occasionally still drawn to the idea of running a set. I like a good commercial traction tire (the S/T MAXX is nice), but would prefer a bit more void on the M55 outer lugs and center ribs.
Didn't keep or wear either set long enough before 1) wanting something with more void for my F350, then the 4Runner 2) needing a different size 3) the center tread ribs stone-guard is nice in theory, but also substantially reduces tread depth 4) they are expensive 5) Disliking the right pull/drift common to some Toyos (set #2 did this on the 4Runner) 6) add your points here...
There are compromises with this (any) design, but the old-style commercial look and performance still appeals, and on the right truck (like a heavy-duty pickup), they just seem like a good choice. Plus, overall I like the Les Schwab Tires chain, so for this type of tread from Les Schwab this is one of the few choices (more than and A/T, less than an M/T). Discount Tire offers many more tread options at very reasonable prices, but I want to buy from Schwab if I can, they offer better service where I travel most, which is an argument
in favor of the M55.
http://mastercrafttires.com/Tires/Light-Truck/Courser-CT.aspx
The Mastercraft (Cooper) Courser C/T has my attention as well (also from Les Schwab), offering a bit more void, but likely not as rugged. The 'sister' tire to the Cooper S/T (
not MAXX) which I ran and liked on the 4Runner years ago. There is a great old thread here on the S/T by Jim65Wagon, but little information 'out there' specifically about the C/T. The Courser C/T is an older design like the M55, but the sidewalls lack any real tread/reinforcement; the sidewalls on my old 255/85R16 S/T treads were notably soft, flexible, and
appeared vulnerable.
In both designs the 275/70R18 is the size I'm considering for a new Dodge/Ram/Cummins. Even with the higher-void design, I'm guessing the Courser C/T seems a little quieter underway because the tone is likely lower, like that of the S/T, not as high-pitched as the M55.
Comments and theories welcomed.