What size wheel?

If it's a 15x10 and you're planning to run a 12.50 tire, I'm 99% you'll be fine, but a 15x8 would probably be too close.

They are just trying to make sure your tire doesn't contact the knuckle adapter. I know of people running 12.50 tires with those lifts on 15x8s with 3.75 BS and it's close. But also ones running 10.50s on a 4.5 BS wheel that clear. A 10 inch wheel leaves less sidewall on sides and that's why I'm pretty sure it would work.

But, like Roger said, if not, you could always do a small spacer.

90 pickup, 22RE, stiff-ass Ranchos, 2.25 catback, 4:1 header, conical intake, 15x7 ICW alloys, 32x11.50 Dunlop Mud Rovers, 4.56s w/v6 rear

-Farm truck until school is done...then plans

2000 Honda CRV EX 5 speed

-Driver