I checked with Titan and their Snow Tire Chains item # TC1555 you referenced do fit your 225/60 R18 tire size and are a solid affordable option. Size wise, I see no difference in these and some of our other recommendations like item # TH01594245 that are confirmed to fit the same vehicle and tire size.
You will want to check with your owner's manual to confirm you can use these S class chains on your 2021 Lexus NX 300.
I have linked an installation video below so you can see how to... view full answer...
When measuring your crossbars to determine if the Thule Pulse Medium Rooftop Cargo Box - 14 cu ft - Matte Black # TH614 will fit on your 2021 Lexus NX 300 you'll measure from the center of one crossbar to the center of the other (center on center). You will need at least 23-5/8" apart but no more than 33-3/8" apart. view full answer...
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