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Cooper ST Maxx   –  

Cooper ST Maxx Reviews
Tire: Cooper Discoverer S/T MAXX
Size: LT285/70R17
Type: Radial
Load range: E     (10 ply)
Max load (lb): 3,195
Sidewall: 3-ply poly
Tread: 1-ply nylon, 2-ply steel, 2-ply poly
Approved rim width (in): 7-8.5
Tread depth (in): 18.5⁄32
Tread width (in): 9.3
Section width (in): 11.4
Overall diameter (in): 33.0
Revolutions per mile: 630
Weight: 60 lbs

Hold the press, there's definitely some magic in these tires. Destined for a Christmas in Alaska, we swapped out our Cooper AT3 tires on our Silverado with a shiny new set of Cooper ST MAXX tires from Tire Rama in Spokane WA.

Ever since we saw the first photos of these tires being tested in the rigors of Australia's Outback we knew we were going to test them through the frozen tundra of Alaska and the Yukon Territory. As things are looking, the Cooper ST MAXX tires are about to meet a whole new challenge. With lots of early snow, the roads have been treacherous.

This is an ongoing review of the Cooper ST Maxx that will take you through some of the most demanding winter driving conditions mother earth has to offer. Deep snow, glacial ice, bottomless mud and that sticky clay that overwhelms most tires that come in to contact with it, this will be a winter challenge that uncovers any weaknesses of a very promising tire.

Continued Below: Cooper ST Maxx Reviews

LT285/70/17E Cooper ST Maxx mounted on the 2011 Chevy Silverado 1500

Cooper ST Maxx Review

Right from the beginning we noticed there was a marked change in the amount of road noise with the Cooper ST MAXX when compared to the Cooper AT3 tires we just took off for the winter. At highway speeds the sound is there, nothing horrible mind you, but there none the less.

On dry roads the noise was about what we expected from the more tread of the ST MAXX. Our AT3's were super quiet so changing to the ST MAXX we initially noticed the sound more then most would. After a short time, the sound from the tires was simply not an issue.

Like their counterparts the AT3, these tires were super smooth on the highway. For a commercial grade 10 ply traction tire we never expected to have such a comfortable ride. Running 60 lbs of nitrogen, the Cooper ST MAXX kept our Chevy's sports car feel intact while adding the option for some serious off road driving whenever the opportunity arises.

Cooper Discoverer ST MAXX Cooper Discoverer ST MAXX Cooper Discoverer ST MAXX Cooper Discoverer ST MAXX
A few photos from our drive to Alaska where we are currently testing the Cooper ST MAXX in this harsh winter enviroment.

Cooper says the ST MAXX is a heavy duty all-terrain tire and lists them as 50% Road and Sand and 50% Dirt and Mud. Well if looks are not deceiving me, Cooper may be on to something here. The Cooper ST MAXX shows signs of being the one tire serious weekend off-roaders well soon be bragging about.

With large deep lugs and specially designed rock chucking ribs, these are surely a serious entry into the off road tire market. The added side-bite makes serious rock crawling and mud runs possible for a well-rounded choice in 4 wheeling fun. But what really intrigues us is the potential for these tires to perform as a serious winter tire too. Cooper designed these tires with their super gooey blend of natural rubber and silica that’s advertised as having exceptional wet traction and to be very capable in the snow and ice too. Well, we’ll be looking to see just how well these tires do in all of these conditions and plenty more.


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