Pirelli Scorpion:tu: Seeing that you are in Edmonton you would need a tire that is pretty good in winter. I have never tried the Pirelli Scorpions but they get very good reviews on Tirerack. I have tried the BFG A/T tires though and you couldn't pay me to use them again, they suck in winter time, especially on ice the rubber compound gets rock hard in cold weather and they slide like hockey pucks. I would recommend the Bridgestone Revos "great tires" but you might not be able to get them in your size.

 

I’ve had sets of both of these. I can’t compare too much since they were on different vehicles but I’d pick the STR’s for the highway. The STR’s rode smooth and handled great. I have 285/65-18 BFG’s now on my Tundra and they’re a really stiff ride even with low pressures. I’d think 20’s would be even worse. I don’t know what kind of off roading you’ll do but since you chose 20’s I’d bet it’s nothing the STR’s couldn’t handle. :tu:

 

Pirelli suck, only got 18k out of the set that came on the truck. I'm much happier with the General Grapplers I have on there now (295/45/20)...I'm going to install a leveling kit on my truck soon and go with a 285/55/20 Nitto Dune Grabber...look them up!