Difficulty & Labor Time
Rating: Beginner (1/5)
Estimated Shop/DIY Time: 1.0 – 1.5 hours (Wheel Mounting & TPMS Pairing)
Factory Platform: Ram DT Platform (5th Gen Architecture / 6-Lug Fully Boxed Steel Frame)
2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins Wheel and Tire Clearance Direct-fit picks
Wheel and Tire Clearance ranked by what fits first for 2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins, then price.
Start with the exact truck, then compare parts, seller options, install notes, and return risk in one place.
Choose this vehicleSeller links may earn Fitment Pilot a referral fee. Fitment guidance and deal quality come first.
Fitment check
Confirm the vehicle, the category risks, and the seller before choosing a part.
2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins Wheel and Tire Clearance stays tied to the fitment facts and seller details shown on this page.
Vehicle 2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins Wheel and Tire Clearance 2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins. The Falken Wildpeak R/T01 LT255/80R17 121/118R MPN 28757187 is one product to compare.
Fits Compatible with conditions Use these rows for comparison shopping only after tire diameter, load range, rim width, service description, wheel offset, and live seller checkout terms agree.
Watch for Wheel and Tire Clearance checkout checks Confirm load rating, wheel offset, tire diameter, rubbing risk, TPMS needs, and spare-tire planning before checkout.
Seller 146 seller price references Confirm the exact part number, vehicle fitment, price and stock with the retailer before ordering.
Photos Category workbench visual The workbench photo is general, not part-specific; an exact product photo appears once image rights are confirmed.
If unsure Read guide or report If a seller page disagrees with the truck, category, or install checks, open a product page, read the guide, or report the issue. 8products checked
0offers checked
2fitment notes
3risks before checkout
Engineering Breakdown
Why These Parts Fit the 2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins
Ram 1500 DT uses a coilover strut with an IFS motion ratio of ~1:1.68. The rear suspension features a 5-link coil setup that maintains ride comfort but requires careful rear spacer height selection to prevent rear spring unseating at full droop when extending rear shocks.
Wheel fitment is governed by three interrelated geometric factors: bolt circle diameter, wheel offset (ET in millimeters), and backspacing (inches from the back lip to the mounting surface). Lower or negative offset wheels push the tire outward for an aggressive stance, which increases the scrub radius and swings the outer shoulder into bumper valances and cab mounts during steering.
Platform Baseline
Factory Chassis Architecture
Ram DT Platform (5th Gen Architecture / 6-Lug Fully Boxed Steel Frame)
Factory Stance: 2.0 to 2.75 inches nose-down factory stance.
Hardware Standard
Hub, Studs & Fasteners
Pattern: 6x139.7 mm / 6x5.5" (Thread: M14 x 1.5)
Torque: 130 lb-ft (176 N·m) for 5-lug DS; 130-140 lb-ft (176-190 N·m) for 6-lug DT
Workshop & Installation Protocol
Wheel and Tire Clearance Engineering & DIY Guide for 2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins
Recommended workshop practices, labor time benchmarks, and safety checks before putting the vehicle back into service.
Required Tools Checklist
- Floor jack & jack stands
- 1/2" Drive calibrated torque wrench
- Thin-wall protective lug nut socket set (prevent wheel finish damage)
- Tire pressure gauge
Critical Safety Checks
- Torque lug nuts in a criss-cross star pattern to manufacturer spec in two stages (first 50%, then 100%).
- Perform mandatory re-torque check after 50 to 100 driving miles.
- Verify full steering lock-to-lock clearance at ride height and during full suspension compression.
Maintenance & Longevity
Wear Triggers & Preventative Inspection
Common mechanical stress points and wear indicators when installing wheel and tire clearance on the 2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins.
Wear Triggers to Monitor
- Wheel bearing stress and premature hub assembly wear when running extreme negative offset (-12mm to -44mm).
- Cupping or feathering wear on oversized tires when run at incorrect cold inflation pressures.
- Caliper bracket scoring if wheel inner barrel clearance is under 3mm.
Chassis Inspection Points
- Factory stamped steel upper control arm ball joint socket separation when leveled 2"+ on DT models.
- Rear 5-link panhard/track bar bushing play inducing lateral axle wobble over highway seams.
- Exhaust manifold stud shearing on 5.7L HEMI engines (tick noise on cold starts).
Fits
2018 Ram 2500 Laramie Crew Cab 4x4 6.7L Cummins
Direct-fit part families stay tied to the selected model year, trim coverage, and manufacturer instructions.
Check
Trim, engine, and package details
Seller fitment tools may exclude package-specific parts or ask for another install check.
Do not assume
Model name alone
The year, body style, trim, and category boundaries must stay visible before choosing a seller.
Parts to compare
The lowest price is not automatically first; fitment notes, support, and return terms change the order.
Verification Methodology
FitmentPilot Data & Research Methodology
FitmentPilot combines automated vehicle database indexing with human automotive editorial review. Rather than presenting generic affiliate catalogs, our system evaluates the exact mechanical constraints of each chassis platform — from bolt circle geometry and motion ratios to factory package exclusions — giving truck owners complete confidence before checkout.
Part Reconciliation
8 Products Verified
Every product listed on this page underwent automated SKU reconciliation, cross-referencing manufacturer part numbers against vehicle trim databases to confirm direct physical and electrical compatibility.
Merchant Inspection
0 Offers Tracked
Live pricing, merchant ratings, in-stock status, and return policy terms are indexed across vetted authorized distributors and automotive marketplaces to provide transparent buying choices.
Engineering Notes
2 Platform Notes
Engineering specifications, package exclusions, and real-world owner installation findings are extracted from technical service bulletins, manufacturer instructions, and verified workshop logs.
Checkout Risk Checks
3 Risk Flags Analyzed
Identified clearance bottlenecks, sensor calibration requirements (ADAS/CCD), or potential trim mismatches highlighted before purchase so buyers avoid costly returns.
Fitment checks that can change the order
Start here before choosing a seller. These are the notes most likely to catch a wrong trim, package, or install assumption.
Check 1 Recheck
SimpleTire wide tire offer capture
80 exact tire size, MPN, and price rows were selected for this vehicle route.
Seller quantity, shipping, returns, and install handoff must be confirmed at checkout
Check 2 Recheck
Ram HD fourth-generation model reference
Vehicle maker material anchors the truck route used for this tire shelf.
Wrong load range or service description can invalidate a tire that otherwise appears to match by diameter