Brain Cell 001

37s Advisor Preview

Draft graph logic for JL/JT 37-inch tire builds. This page is intentionally labeled as a preview: it shows recommendation branches, required checks, warnings, and evidence IDs before anything becomes checkout-ready.

Draft advisor logic — not checkout fitment

This preview is based on the local 37s brain cell and includes owner-submitted 392/4xe exceptions. It still needs forum/community corroboration and shop review before production recommendations.

Test scenario

2024 JLU 392 · 37s · stock height 2024 JLU 4xe Rubicon · 37s · stock height Generic JLUR · weekend 37s JT Rubicon · heavy overland 37s JL 2-door Rubicon · hard-rock 37s JLU Sport S · 37s · no lift

2021 Wrangler

Rubicon · 2-door · 3.6L V6

Tire goal37s

Lift2.5" planned / 2.5" current

Gearing4.10

Use caserock crawl

Payloadlight

preview draft

Advisor answer

Trail 37s branch: use a 3.5-inch baseline unless a specific exception applies, then validate steering, wheel specs, calibration, gearing, and brakes.

Matched branches

Weekend/trail 37s baselineLow-lift 37s rubbing-risk branchHard-rock steering escalation

Matrix package recommendation

TierBest · Premium complete 37s build

Package IDbest_premium_37s_build

Lift3.5 premium complete system

Tire branchpremium A/T for daily-overland, M/T for trail/aggressive build

Wheel branch17" / 8.5-9.0 / 4.5-4.75 default; 3.5 beadlock/poke choices require fender/scrub/legal review

Required checks

• tire-size calibration / programmer

• wheel backspacing or offset validation

• axle gearing review

• flex and bump-stop clearance validation

Recommended checks

• brake performance review

• heavy-duty tie rod / drag link / track bar

• ball joints and steering assist evaluation

Warnings

• 37s are a system upgrade: clearance, calibration, gearing, steering, braking, and driveline stress all matter.

• For real trail use, 3.5 inches is the safer default starting point unless a specific exception applies.

• 2–2.5 inch 37s builds can drive fine on road but need flex/rubbing validation before trail recommendation.

• Hard rock use escalates steering needs quickly; stock steering can be overwhelmed when bound up.

Missing inputs

• actual tire diameter

• wheel backspacing

• wheel offset

Evidence IDs

EV-37S-B003-001EV-37S-B003-012EV-37S-B003-008EV-37S-B003-007EV-37S-B003-006EV-37S-B003-022EV-37S-B003-011EV-37S-B003-021