2022 3.6 with 3.21 and rebel wheels??

[jimeneztransport84]

I have a 2022 with 3.6 and 3.21 gears. Truck came with 275 55 r20s. If I swap out to rebel wheels with 275 70 r18s kos will I struggle because of 3.21s? I see that some come with 275/65/18s with 3.6 and 3.21s.