2020 model year · Fourth generation (K2XX)

Chevrolet Tahoe tire size

Largest standard tire, 2020255/70R17

Maker31.1 in tall, nominal

The 2020 Chevrolet Tahoe comes on 265/60R17 or 255/70R17 tires as standard, by trim, per Chevrolet’s 2020 Tahoe 4WD Police Package 9C1 specification guide.

265/60R17: Police Pursuit Vehicle (9C1), fleet.

255/70R17: Special Service Vehicle (5W4), fleet.

2020 Tahoe 4WD Police Package 9C1 specification guide

Standard sizes: 2
Wheels: 17 in

01 / Stock

Tires and wheels on every 2020 Tahoe

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

2020 Chevrolet Tahoe

MakerEstimate ±

Stock tire and wheel sizes of the 2020 Chevrolet Tahoe by configuration
Configuration	Tire	Tall in, nominal	Wheel
Police Pursuit Vehicle (9C1), fleet	P265/60R17^{source 1}	29.5	not in our data
Special Service Vehicle (5W4), fleet	P255/70R17^{source 2}	31.1	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.

SourcesMakerThe small number by a figure says which document it is from.

Documents last checked Oct 12, 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 Tahoe depends on lift, wheel offset and trim; these figures don’t say.

From 265/60R17Stock on the Police Pursuit Vehicle (9C1), fleet · 29.5 in tall

What larger tires change compared with the stock 265/60R17
Size	Tall in	Axles rise in	At an indicated 60 true mph	Axle ratio acts like	Compare
265/60R17stock	29.5	0.0	60.0	3.08	Baseline
265/70R17+2.1 in taller	31.631.1 to 32.1	+1.0+0.8 to +1.3	64.263.3 to 65.2	2.882.83 to 2.92	Compare →
285/70R17+3.2 in taller	32.732.2 to 33.2	+1.6+1.3 to +1.8	66.565.5 to 67.5	2.782.74 to 2.82	Compare →
285/75R17+4.3 in taller	33.833.3 to 34.3	+2.2+1.9 to +2.4	68.867.7 to 69.8	2.692.65 to 2.73	Compare →

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

From 255/70R17Stock on the Special Service Vehicle (5W4), fleet · 31.1 in tall

What larger tires change compared with the stock 255/70R17
Size	Tall in	Axles rise in	At an indicated 60 true mph	Axle ratio acts like	Compare
255/70R17stock	31.1	0.0	60.0	3.08	Baseline
265/70R17+0.6 in taller	31.631.1 to 32.1	+0.3±0.0 to +0.5	61.160.1 to 62.0	3.032.98 to 3.07	Compare →
285/70R17+1.7 in taller	32.732.2 to 33.2	+0.8+0.6 to +1.1	63.262.2 to 64.1	2.922.88 to 2.97	Compare →
285/75R17+2.8 in taller	33.833.3 to 34.3	+1.4+1.1 to +1.6	65.464.4 to 66.3	2.832.79 to 2.87	Compare →
315/70R17+3.3 in taller	34.433.8 to 34.9	+1.7+1.4 to +1.9	66.465.4 to 67.4	2.782.74 to 2.83	Compare →
35x12.50R17+3.9 in taller	35.034.5 to 35.5	+2.0+1.7 to +2.2	67.666.6 to 68.6	2.732.69 to 2.77	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.

03 / By year

Tahoe stock tires by model year

Stock tire sizes of the Chevrolet Tahoe by model year
Year	Stock sizes
2020	265/60R17 Police Pursuit Vehicle (9C1), fleet 255/70R17 Special Service Vehicle (5W4), fleet
2019	265/60R17 Police Pursuit Vehicle (9C1), fleet 255/70R17 Special Service Vehicle (5W4), fleet
2018	265/60R17 Police Pursuit Vehicle (9C1), fleet 255/70R17 Special Service Vehicle (5W4), fleet
2017	265/60R17 Police Pursuit Vehicle (9C1), fleet 255/70R17 Special Service Vehicle (5W4), fleet
2016	265/60R17 Police Pursuit Vehicle (9C1), fleet 255/70R17 Special Service Vehicle (5W4), fleet
2015	265/60R17 Police Pursuit Vehicle (9C1), fleet 255/70R17 Special Service Vehicle (5W4), fleet

The 2020 Tahoe belongs to the generation below; their pages have each configuration’s clearance, angles and weights.

Chevrolet Tahoe K2XX (2015–2020): full specs

04 / Next

Try a size on your rig

Tire size calculatorPut 255/70R17 next to 265/70R17 or any size you’re eyeing, with this Tahoe’s gearing.Compare sizes Tahoe specsClearance, angles and weights, and the rig builder to see a lift and bigger tires on it.Open the spec plate Tahoe 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

How far off is the 2020 Tahoe’s speedometer with bigger tires?

Set for the stock 265/60R17, with 265/70R17s it reads about 6.6% low: 64.2 mph at an indicated 60 (63.3 to 65.2, by brand) and with 285/75R17s it reads about 12.7% low: 68.8 mph at an indicated 60 (67.7 to 69.8, by brand). Worked out from the nominal sizes.

What is the biggest tire the 2020 Tahoe comes on?

As built, the 255/70R17, about 31.1 in tall (nominal), on the Special Service Vehicle (5W4), fleet.

Did the Chevrolet Tahoe’s tire sizes change by year?

Not in the years we have: 2015 to 2020 all list 265/60R17, 255/70R17.