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Kelly TSR vs. Cooper ST/MAXX Results

Hunner

Hunner

Well-Known Member
Messages
2,334
Location
Arkansas
f5moab said:
Someone may rate the cooper as 10 ply but it is an eight ply tire. The three sidewall plies are part of the carcass that is also under the tread. From Cooper's site:

"Cooper's proven, class-leading 3-ply “Armor-Tek[SUP]3®[/SUP]” construction contributes to the durability of the S/T MAXX by adding strength to the sidewall and tread area."

Then they add two more polys, two steel and one nylon to the tread cap. So the five added to the tread cap, plus the three ply carcass, equals 8 ply.

Many moons ago, it took 10 plies to make a E rated tire; however, with the invention of new high tech compounds, E rated can less than 10 and usually seven or eight. (Maybe even less as new compounds come on the market.)

Telemike: Just remember, one time off road on sharp sidewall biting tires, could make the difference between three ply vs. two ply sidewalls.
Click to expand...

Yeah I think we went thru this before. I questioned the tire dealers math back when I first got the MT/MTZ.
I should have said 8 ply "rated" and 10 ply "rated" but the Coopers do claim an "E" rating on their site which until the feds change it is a 10 ply rating.
Sort of like 2 x 4's aren't!

Either way those Kelly's look good on your rig telemike keep us posted how you "rate" them.
 
Last edited:
Pappibri

Pappibri

Well-Known Member
Messages
1,611
Location
Cohoctah, MI
Tires look good. After you put them thru some challenges let us know how they stand up... Rig is looking good..:thumbs:
 
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