2026 model year · Fifth generation (DJ) Heavy Duty

Ram 2500 tire size

Largest tire option, 2026285/60R20

Maker33.5 in tall, nominal

The 2026 Ram 2500 leaves the factory on 245/70R17, 285/70R17, 275/70R18 or 285/60R20 tires, each with an option package, per the Ram 2500/3500 Owner's Manual, 2026 model-year folder.

245/70R17: Tradesman with the Tire option LT245/70R17E.

285/70R17: Tradesman 4x4, Power Wagon with the Tire option LT285/70R17D.

275/70R18: Tradesman, Big Horn, Laramie, Limited with the Tire option LT275/70R18E.

285/60R20: Tradesman, Big Horn, Laramie, Limited, Power Wagon with the Tire option LT285/60R20E.

Ram 2500/3500 Owner's Manual (Ram 2500/3500 OM USC E4), 2026 model-year folder

Standard sizes: 0
With a package: 4 sizes
Wheels: 17–20 in

2026 Ram 2500 Rebel in white, front three-quarter view — Photo: Elise240SX, CC BY-SA 4.0, via Wikimedia Commons, resized.

01 / Stock

Tires and wheels on every 2026 Ram 2500

The size each configuration leaves the factory on, and the one an option package swaps in.

2026 Ram 2500

MakerEstimate ±

Stock tire and wheel sizes of the 2026 Ram 2500 by configuration
Configuration	Tire	Tall in, nominal	Wheel
Tradesmanwith Tire option LT245/70R17E	LT245/70R17E	30.5	not in our data
Tradesman, Big Horn, Laramie, Limitedwith Tire option LT275/70R18E	LT275/70R18E	33.2	not in our data
Tradesman, Big Horn, Laramie, Limited, Power Wagonwith Tire option LT285/60R20E	LT285/60R20E	33.5	not in our data
Tradesman 4x4, Power Wagonwith Tire option LT285/70R17D	LT285/70R17D	32.7	not in our data

Tire, wheel and fitment figures are the maker’s. “Tall” is worked out from the size code (dashed); a real tire measures a little differently. —: not in the documents we hold yet.

SourceMakerEvery figure above is Ram’s, from this document.

Ram 2500/3500 Owner's Manual (Ram 2500/3500 OM USC E4), 2026 model-year folder · FCA US LLC (Stellantis North America)

Documents last checked Oct 6, 2026. How we read them and what the marks mean: how we source the numbers. A figure doesn’t match its document? Report a wrong number.

02 / Bigger tires

What the next sizes up change

From each stock size, the common larger sizes on the same wheel: how much taller, how far the axles rise, what the speedometer shows and how the axle ratio behaves. Whether one fits your Ram 2500 depends on lift, wheel offset and trim; these figures don’t say.

From 245/70R17Stock on the Tradesman with the Tire option LT245/70R17E · 30.5 in tall

What larger tires change compared with the stock 245/70R17
Size	Tall in	Axles rise in	At an indicated 60 true mph	Compare
245/70R17stock	30.5	0.0	60.0	Baseline
265/70R17+1.1 in taller	31.631.1 to 32.1	+0.6+0.3 to +0.8	62.261.2 to 63.1	Compare →
285/70R17+2.2 in taller	32.732.2 to 33.2	+1.1+0.9 to +1.3	64.363.4 to 65.3	Compare →
285/75R17+3.3 in taller	33.833.3 to 34.3	+1.7+1.4 to +1.9	66.565.5 to 67.5	Compare →
315/70R17+3.9 in taller	34.433.8 to 34.9	+1.9+1.7 to +2.2	67.666.6 to 68.6	Compare →
35x12.50R17+4.5 in taller	35.034.5 to 35.5	+2.2+2.0 to +2.5	68.867.8 to 69.9	Compare →

Estimate ±Worked out from the nominal sizes; the small line is the range for real tires within 1.5% of nominal.

From 285/70R17Stock on the Tradesman 4x4, Power Wagon with the Tire option LT285/70R17D · 32.7 in tall

What larger tires change compared with the stock 285/70R17
Size	Tall in	Axles rise in	At an indicated 60 true mph	Axle ratio acts like	Compare
285/70R17stock	32.7	0.0	60.0	4.10	Baseline
285/75R17+1.1 in taller	33.833.3 to 34.3	+0.6+0.3 to +0.8	62.161.1 to 63.0	3.963.91 to 4.02	Compare →
315/70R17+1.7 in taller	34.433.8 to 34.9	+0.8+0.6 to +1.1	63.062.1 to 64.0	3.903.85 to 3.96	Compare →
35x12.50R17+2.3 in taller	35.034.5 to 35.5	+1.1+0.9 to +1.4	64.263.2 to 65.2	3.833.77 to 3.89	Compare →
37x12.50R17+4.3 in taller	37.036.4 to 37.6	+2.1+1.9 to +2.4	67.966.9 to 68.9	3.623.57 to 3.68	Compare →

Estimate ±Worked out from the nominal sizes; the small line is the range for real tires within 1.5% of nominal.

From 275/70R18Stock on the Tradesman, Big Horn, Laramie, Limited with the Tire option LT275/70R18E · 33.2 in tall

What larger tires change compared with the stock 275/70R18
Size	Tall in	Axles rise in	At an indicated 60 true mph	Compare
275/70R18stock	33.2	0.0	60.0	Baseline
295/70R18+1.1 in taller	34.333.7 to 34.8	+0.6+0.3 to +0.8	62.061.1 to 62.9	Compare →
285/75R18+1.7 in taller	34.834.3 to 35.4	+0.8+0.6 to +1.1	63.062.1 to 64.0	Compare →
35x12.50R18+1.8 in taller	35.034.5 to 35.5	+0.9+0.7 to +1.2	63.362.4 to 64.3	Compare →
37x12.50R18+3.8 in taller	37.036.4 to 37.6	+1.9+1.6 to +2.2	67.065.9 to 68.0	Compare →

Estimate ±Worked out from the nominal sizes; the small line is the range for real tires within 1.5% of nominal.

From 285/60R20Stock on the Tradesman, Big Horn, Laramie, Limited, Power Wagon with the Tire option LT285/60R20E · 33.5 in tall

What larger tires change compared with the stock 285/60R20
Size	Tall in	Axles rise in	At an indicated 60 true mph	Axle ratio acts like	Compare
285/60R20stock	33.5	0.0	60.0	4.10	Baseline
275/65R20+0.6 in taller	34.133.6 to 34.6	+0.3±0.0 to +0.6	61.160.2 to 62.0	4.033.97 to 4.09	Compare →
35x12.50R20+1.5 in taller	35.034.5 to 35.5	+0.8+0.5 to +1.0	62.861.8 to 63.7	3.923.86 to 3.98	Compare →
37x12.50R20+3.5 in taller	37.036.4 to 37.6	+1.8+1.5 to +2.0	66.365.3 to 67.3	3.713.65 to 3.76	Compare →

Estimate ±Worked out from the nominal sizes; the small line is the range for real tires within 1.5% of nominal.

Assumption, not data

Heights come from the size code. A real tire of a size measures within about 1.5% of it, depending on brand, tread, wheel width and pressure, so each figure carries that range. The axles rise by half the change in height; the body only rises with a lift.

Fitment guides for the Ram 2500

Ram · 2500

35-inch tires

35s are an achievable Ram 2500 target, but wheel width and offset can create rubbing even when vertical room looks generous. Power Wagon and standard trims do not share the same starting hardware.

Often achievable

Ram · 2500

37-inch tires

37s are viable on a Ram 2500, but the dependable path is a coordinated suspension and wheel package. Some trucks can street-fit a 37 with modest lift, while full articulation exposes liner and radius-arm conflicts.

Configuration-dependent

03 / By year

Ram 2500 stock tires by model year

Stock tire sizes of the Ram 2500 by model year
Year	Stock sizes
2026	245/70R17 Tradesman with the Tire option LT245/70R17E 285/70R17 Tradesman 4x4, Power Wagon with the Tire option LT285/70R17D 275/70R18 Tradesman, Big Horn, Laramie, Limited with the Tire option LT275/70R18E 285/60R20 Tradesman, Big Horn, Laramie, Limited, Power Wagon with the Tire option LT285/60R20E
2013	245/70R17 Tradesman, ST 265/70R17 Big Horn, Laramie, SLT, Outdoorsman, Lone Star, Laramie Longhorn 285/70R17 Power Wagon
2011	245/70R17 ST 265/70R17 Laramie, SLT 285/70R17 Power Wagon

The 2026 Ram 2500 belongs to the generation below; their pages have each configuration’s clearance, angles and weights.

Ram 2500 DJ (2019–present): full specs

04 / Next

Try a size on your rig

Tire size calculatorPut 285/60R20 next to 275/65R20 or any size you’re eyeing, with this Ram 2500’s gearing.Compare sizes Ram 2500 specsClearance, angles and weights, and the rig builder to see a lift and bigger tires on it.Open the spec plate Ram 2500 towingTowing, payload, GCWR and tongue weight for every configuration.See towing Tire sizes by vehicleEvery stock size on the trucks and SUVs we cover, by wheel diameter.Browse sizes

05 / FAQ

Questions people ask

Which 2026 Ram 2500 tires are standard, and which come with a package?

Ram lists every 2026 Ram 2500 tire as an option: the Tradesman gets 245/70R17 with the Tire option LT245/70R17E; the Tradesman, Big Horn, Laramie, Limited gets 275/70R18 with the Tire option LT275/70R18E; the Tradesman, Big Horn, Laramie, Limited, Power Wagon gets 285/60R20 with the Tire option LT285/60R20E; the table lists 1 more option.

Will 35-inch or 37-inch tires fit a Ram 2500 with a level or lift?

It depends on the lift, wheel offset and trim, and this page doesn’t rate fit; our fitment guides do. 35-inch tires: often achievable; 37-inch tires: configuration-dependent.

What is the biggest tire the 2026 Ram 2500 comes on?

The 285/60R20, about 33.5 in tall (nominal), with the Tire option LT285/60R20E.

Did the Ram 2500’s tire sizes change by year?

2026: 245/70R17 with a package, 285/70R17 with a package, 275/70R18 with a package, 285/60R20 with a package. 2013: 245/70R17, 265/70R17, 285/70R17. 2011: 245/70R17, 265/70R17, 285/70R17.