Re: For you guys with aftermarket wheels....hub centric rings
typeone, is your tire shop balancing these wheels static or dynamic balance and are the balancing from the rim hub center hole or lug nut holes. I've had experience with 35" BFG A/T T/A KO we had road force balanced on a Chev Avalanche shook bad even after road force with dynamic balance, in the end we ended up just static balancing them (run out of room for weights when dynamic balanced) but then the truck drove great even at 120-140 km/h no shakes.
I would suggest you look at getting the wheels balanced from the lug nut holes (finger balance / flange plate adaptor) and get them to do a runout to make sure that the rim is round and center checked on the wheel balancer. We have Hunter Road Force balancers at my work which are great for these drivablity issues.
NVR2LOW & THE 2 LOW CREW (Wife, Son & Daughter)
2007 Chevrolet Colorado Crew Cab ZQ8
2" Belltech Drop Ball Joints, 2" Belltech Drop Blocks
Bedrug liner, Checkmate FX Tonneau Cover
GM premium molded carpet floor mats
Canyon & Colorado club of Canada ( member #7 )