It sits up about an inch like was described with the BMW solution. Flat towards the back seats up an inch in the front. The 115/95/17 tire sticks up less but the design of the rim makes it protrude the inch. Should be fine with the trunk mat. Will follow up with pictures.
Went the 2020 RLX route. Rim 42700-TX4-A51. Lug Nuts 90304-TK4-A01 (5), ball seat lugs for rim match. Continental Tire SContact 115/95/R17. Same size tire used with BMW rim solution. Still working on securing rim in wheel well, will use adhesive.
Genuine Hyundai 65581-3K000 Spare Tire Mounting...
According to Acura Parts websites the RL uses a 42700-SJA-J52 rim where the RLX uses a 42700-TK4-A51 rim. The RLX rim doesn't look as high as the RL rim but hard to tell without the specs. Saw where the RLX rim is available for $55 locally. Just trying to come up with a solution that lays down...
Was wondering about using the tire size used on the BMW solution by @kjechel 115/95/17 vs the RL tire size of 155/70/17. Would the spare sit lower with the 115 vs 155 in the well. Like the RL solution better vs BMW. Just thinking. Thanks.