Have hummer h3 with 18inc rims was looking at set of Mickey Thompsons 275/65R18 116T STD are these fine for hummer’s weight? Thxs

 

116 is the minimum load index approved for the 3. My 2857516's are 126+load range E and never had a problem since installed 10+yrs ago.
Understanding Tires Load Index

 

I just realized I’ve had cooper discovery 116t been driving on them since got hummer here’s tires

 

Just make sure to stay under GVWR when driving on those.

 

it says that’s 5800 my main point are these ok to get and drive on I’ve been riding on cooper discover same 116t max capacity 2700 ish for 3 years 0 issues?

 

With your MT Baja Boss selection you would always be running at the near max capacity for that tire, just like you have been on the coopers. They are more for a Jeep than an H3.

BTW my H3 Alpha weighs nearly 6000# with its off road goodies, basic gear/tools and me in it. Confirmed on a landscape supply scale. If I were to add three people and all our luggage/gear, your tires would not be a good selection. If you are never going to load yours down with 4 people and all their gear, maybe stuff up on the roof rack etc..., then OK if that's what you want to do.

I run 305/70 R16 Mickey Thompson Baja Legend MTZs. (124/121Q) Different size and rating.... but you get the idea.

If I were you and wanted Mickey Thompsons I'd be looking at Mickey Thompson Baja Legend EXP LT275/65R18 123/120Q instead.

Your choice. Good luck and let us know what you end up doing.

 

I'll throw my $0.02 in.

From my understanding of everything I have read the the load index for tires...

The tire load index is the amount of weight a single tire can safely support at max air pressure. Example: a load index of 116, can support 2,756 pounds at maximum air pressure. Multiply that by four tires (4 x 2,756 = 11,024 pounds) to get your H3s maximum load carrying capacity. Also, never install tires with a lower load carrying capacity than the original tires that were factory installed on your vehicle.

 

Load index is based on MAX TIRE PRESSURE, which is @ 44psi for the MT tires posted above. Recommended to get tires with a load index that will support GVWR on 2 tires able to hold the load shift weight when cornering.
Chart below shows how air pressure affects load index:

 

Ok so would y’all agree they ok to use like I’m not gonna be driving and have blow out or something btw Ik anything can happen I’ve just had 116t 18inch tires I’ve been driving over 15k miles 0 issues

 

also what’s good pressure run at ? I stay around 33-35?