I know people are clearing 37s on the road with the 1 inch. I went with the RPG one because it states 2.25 in the front and 1.25 in the rear. Felt if i was going to go off road I would appreciate the extra clearance.
https://www.rpgoffroad.com/product/bronco-spring-perch-collar/
Rpg quotes 2.25 front and 1.25 on back then going from 35s to 37s I would say it’s probably 3-3.5 maybe 4 inches higher
currently parked to a stock wildtrak