I just replaced my 18" 2013 Sahara wheels with 18" Black Rhino wheels and Toyo R/T 33x12.5x18 tires. I love the new look but I can feel the weight difference when I drive. I just checked the Toyo website and they spec out my tires at 75lb each. The wheels are about 30lb so around 105 total.
Only you can answer that question. Since the tires are not large in diameter and you have the 3.6 your main concern is fuel economy, braking and acceleration. Heaviest rim/tire combo I've seen on a JK are from a Humvee.
Unsprung weight (weight under the springs) is the worst kind. Only You can say what is/isn't a problem. Check your fuel economy and see how you adjust. IF you are within some kind of trade-in free drive period - make it quick or you're married to them for awhile.
Bitch to sell.
Simply put, lighter is better. There is no "tipping point" unsprung weight where below this weight all is well and above this weight is bad. The lighter you can make your wheels and tires, the better, all else equal.
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