As my prior post said the speed rating is extremely important and a major cause of tread coming off and/or blowouts.
If you are getting new tires consider getting them pre-mounted on new rims. I increased my tire size, pressure and got new rims to make sure they were correctly sized. Some rims are to low rated for higher pressures.
Note, a higher pressure will give a harsher ride which may cause problems. If your new tires are higher rated you should check your manufacturers pressure to load chart and adjust pressure to fit. In my case I tried running mine at 65 and rattled stuff out of the closet. Then I ran the Goodyear recommended pressure for my load (55 psi) and have had no problems.
To summarize, you don't have to run tire max, just the pressure suited for the load on the tires.
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2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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