Brain Cell 001
37s Advisor Preview
Rubicon 392 · 4-door · 6.4L 392 V8
JLU 392 exception: do not automatically require lift or regear for daily/light-trail 37s. Validate rubbing at full lock and articulation before harder use.
Matched branches
Matrix package recommendation
• tire-size calibration / programmer
• wheel backspacing or offset validation
• axle gearing review
• full-lock and articulation rubbing check
• brake performance review
• 37s are a system upgrade: clearance, calibration, gearing, steering, braking, and driveline stress all matter.
• Do not automatically require lift or regear for a 2024 JLU 392 on 37s for daily/light-trail use.
• Serious rock crawling still needs clearance validation; added lift may be needed under articulation.
• actual tire diameter
• wheel backspacing
• wheel offset
