Am assuming you are comparing half ton's right?
There is no comparison between the half ton Sub & Tahoe vs 8.6K GVWR Suburban's
If half ton Sub, then the only difference is the length.
I've owned a K5 Blazer (now called a 2 door Tahoe) and have towed
with my K5 and a 4 door Tahoe. For towing...the Sub wins hands down in
every category I care about
As the trailer gets bigger (longer, heavier), the Sub edges out the Tahoe even more
-Ben
Picture of my rig1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
Praise Dyno Brake equiped and all have "nose bleed" braking!
Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
Sold the boat (looking for another): Trophy with twin 150's...
51 cylinders in household, what's yours?...