Ram 2500 — Bolt Pattern & Wheel Fitment

2019-2024 5th gen HD (DJ / D2 platform; Ram 2500 = DJ)

INDEPENDENTLY RE-VERIFIED. boltPattern 8x165.1 (8x6.5 in): I re-fetched the FCA Body Builder Instruction myself and extracted it myself — "Bolt Circle: 8 x Ø165.1 mm" on the Ram 2500 (DJ) page. lugTorque 130 ft-lb (cone) / 129 ft-lb (flanged) and threadPitch M14 x 1.50 with 22 mm socket: confirmed by my own download and text extraction of FOUR owner's manual model years — 2019, 2020, 2022 and 2024 — all identical, so the spec is stable across the entire DJ run and there is NO basis for a mid-cycle generation split. The MY2020 and MY2022 manuals are new sources I found via an undocumented Mopar publication index (https://vehicleinfo.mopar.com/assets/publications/en-us/Ram/<year>/2500.json) that the first researcher missed; that index is the reliable route to Mopar OM filenames for future runs. TORQUE SPLIT IS BY NUT SEAT, NOT WHEEL MATERIAL — the manual's own column header is "Lug Nut/Bolt Type: Cone / Flanged". Do not render this as an alloy-vs-steel split; lugTorqueSteel is intentionally empty. CORRECTIONS I MADE TO THE FIRST RECORD (sales-code transcription errors, wheel list only): the 18x8 chrome-clad steel wheel on the 2500 (DJ) page is sales code WHB, not WBH (WBH is the Ram 3500 SRW code on page 2 of the same document); and WRJ and WRA were removed from the 2500's 20-inch list — those codes appear only on the 3500 SRW page, while the 2500 (DJ) page lists 20x8 as WH3 / WJR / WF3 / WRP. No safety-critical field was wrong. UNCONFIRMED — NOT FROM ANY OEM DOCUMENT: centerBore 121.3 mm is aftermarket/hub-centric-spacer consensus only. I checked every wheel-related document in the Ram HD body-builder set (the index contains only "HD 2500 Truck Wheels, Lug Nuts & Wheel Valves" and "HD 2500 Tire Chart" — there is no OEM offset/bore drawing) plus four owner's manuals; none states a hub bore. Treat 121.3 as a candidate to confirm by measuring the hub, not as a published spec. oemOffset is the sentinel "unverified" for the same reason: no OEM document states offset or backspacing anywhere, and third-party databases conflict badly (roughly ET57 / ~6.75 in backspacing on the 8-inch factory wheels in one major fitment database versus about +44 mm elsewhere). That conflict is unresolved and neither number should be used for fitment math. The unusually narrow OEM widths (7.5-8.0 in on an HD truck) are consistent with a high-positive-offset factory setup. GENERATION-ADJACENT WARNINGS: (1) Do NOT carry these numbers to the Ram 1500 (DT/DS), which is 6x139.7 (older 5x139.7) with much lower torque — this record is 8-lug HD only. (2) 8x165.1 is NOT interchangeable with Ford Super Duty 8x170 or 2011+ GM HD 8x180. (3) MOST IMPORTANT CROSS-MODEL TRAP: the Ram 3500 DRW (dually) on page 3 of the very same OEM body-builder document is "Bolt Circle: 8 x Ø200 mm" — a completely different 8-lug pattern, with flat-mounted center-piloted wheels, two-piece lug nuts (part 06509424AA) and 17 x 6.0 wheels on LT235/80R17E. Ram 2500 is SRW only; none of the DRW wheel or bolt-circle data applies to it, and an "8-lug Ram" search result can easily be the 8x200 dually. (4) The wheel/tire body-builder instructions are dated mid-2018 and cover the DJ from MY2019; wheel offerings were refreshed during the run, so the wheel list is representative of the generation rather than an exhaustive MY2024 order guide. (5) The 2025+ HD facelift was not researched and is outside this record.