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Cooper Discoverer ST MAXX - 30X9.50R15

Discoverer ST MAXX 30X9.50R15 Tire Specs

Size Diameter Width Rim
Range
Measured
Rim
Tread
Depth
Load
Range
Max
Load
Max
psi
Max
Speed
Weight Sidewall
Letters
Revs/Mile
30X9.50R15LT
104Q C BSW
29.7" 9.3" 6.5-8.5" 7.5" 18.5/32" C - 6 ply 1985 lbs 50 psi 99 mph 44 lbs Black 700 Show Specs
Cooper Discoverer ST MAXX 30X9.50R15
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Discoverer ST MAXX
All Terrain - Studdable
Size: 30X9.50R15
Read Reviews(9)
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(Last Checked 11/28/21)

The Cooper Discoverer ST MAXX is an all season studable tire intended for use on SUVs and trucks. They are designed with an aggressive tread compound that can handle tough terrains including off road and excellent traction in snowy and icy conditions. Discoverer ST MAXX tires offer low road noise while providing great handling and control.

The 30X9.50R15 Cooper Discoverer ST MAXX has a diameter of 29.7", a width of 9.3", mounts on a 15" rim and has 700 revolutions per mile. It weighs 44 lbs, has a max load of 1985 lbs, a maximum air pressure of 50 psi, a tread depth of 18.5/32" and should be used on a rim width of 6.5-8.5".



See all Discoverer ST MAXX tire sizes Tire Reviews [+]
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Hiroshi's Review
Performance : 8/10
Appearance : 10/10
Noise : 5/10
Comfort : 6/10
Price : Seems Right
Recommend : Yes
Comments : I have put nearly 20K miles on my set. The ST MAXX is a solid tire -- excellent in snow, mud, sand, and on hardpack trails. However, in below freezing conditions, the rubber compound is harder, and does not handle as well on packed snow and black ice. Off-road, it can be run at low air pressure for improved traction. Given the aggressive tread pattern, it is not too loud on the highway.
Cerberus's Review
Performance : 10/10
Appearance : 10/10
Noise : 8/10
Comfort : 7/10
Price : Good Deal
Recommend : Yes
Comments : I have ran these tires among others due to my side profession as a car flipper (I buy fix and sell) and by far these are the best all round tire on the market. The only thing that would make this tire better would be its winter traction which is already good. It gets better with basic siping done where the blocks are split 2 times. They dont hold rocks, they clean of mud really well and dig and bite across lots of different surfaces. They also do a great job of handling standing water without hydroplaning. This is my default tire to suggest now for a world capable unit.
Chupacabra's Review
Performance : 9/10
Appearance : 10/10
Noise : 8/10
Comfort : 7/10
Price : Good Deal
Recommend : Yes
Comments : Got these to replace my C rated KO2s that came on my truck (which only lasted 27k miles and chunked horribly).So far these tires are a huge improvement in traction in all situations. Places/conditions that previously required 4wd I can now tackle in 2wd, and the tires do not loose grip nearly as much as the BFGs did. The noise is very comparable, which is pretty incredible, and fuel efficiency remains about the same. Very impressed so far.
BillyBFord's Review
Performance : 10/10
Appearance : 10/10
Noise : 7/10
Comfort : 8/10
Price : Great Deal
Recommend : Yes
Comments : I now have 6000 miles on these from interstate to off road. Towing to 8k pounds and carrying 2500lb pallets in bed. At first dealer inflated to rated 65psi cold and ride was horrible. Optimum ride at 55 cold front and 45 cold in rear. The gain 5psi as they warm up. This gives optimum contact of tread, ride and fuel economy. Driving conditions have been dry, heavy rain and snow/ice. Snow/Ice I dropped pressure -10psi and still drove good increasing contact area. I have over 100k miles each on Toyo, Nitto Terra Grappler and General tires. These impress me with highway and Offroad traction to include bad weather. Offroad has been both sand, clay soils in southeast and rocky terrain of the Smokies. Bought another set for Jeep
Mitch's Review
Performance : 9/10
Appearance : 10/10
Noise : 5/10
Comfort : 10/10
Price : Great Deal
Recommend : Yes
Comments : 2nd set and love them.
Mororvation4u's Review
Performance : 8/10
Appearance : 7/10
Noise : 6/10
Comfort : 6/10
Price : Good Deal
Recommend : Yes
Comments : Good looking hybrid AT/MT. Drives well on the hwy as a daily driver but has never let me down in Sand, soggy mud, hardback or rocky climbs. Will buy again.
Ryland's Review
Performance : 9/10
Appearance : 9/10
Noise : 10/10
Comfort : 9/10
Price : Good Deal
Recommend : Yes
Comments : Great improvement over the factory MT's. Better ride, quieter, and traction handling. Would buy again.
Gary's Review
Performance : 4/10
Appearance : 4/10
Noise : 5/10
Comfort : 5/10
Price : Great Deal
Recommend : Yes
Comments :
Anonymous Review
Performance : 10/10
Appearance : 10/10
Noise : 10/10
Comfort : 10/10
Price : Great Deal
Recommend : Yes
Comments : Wanted a bigger than stock tire on my dually but, didn't want 35s or have to run spacers. These are about 33s and narrow,so no need for spacers. My second set and I absolutely love them. I got 45k miles out of my first set

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