Data sheet TS-275/60R20 · Size

275/60R20 in inches

By the formula 275/60R20 is 33.0 in (838 mm) overall. Makers' tables run nearby from 32.9 in to 33.4 in.

Fig. 1 — Cross-section

A section width, B sidewall, C rim, D overall diameter. Nominal, on the measuring rim.

Table 1 — Nominal dimensions

275/60R20: nominal dimensions in inches and millimeters
Item	in	mm
Overall diameter	32.99	838
Section width	10.83	275
Sidewall	6.50	165.0
Rim	20	508.0
Circumference	103.6	2,633
Revs per mile · km	611	380

From the makers’ size tables
Flotation size printed	33X11.00R20LT	Mickey Thompson
Measuring rim	8″	Mickey Thompson LT
Approved rims	7.5–9.5, 8.0–9.5″	9 LT tires

Table 2 — Measured range

32.90–33.40″overall diameter, 22 tires from 5 makers (math: 32.99″)

52–64 lbweight, 9 LT versions

10.0–18.5/32″new tread depth

3,000–3,415 lbmax load per tire, 8 of 9 LT versions list it, as published

9 LT · 13 Pversions in the makers’ tables we read

All 22 tires ↓

Table 3

22 tires in 275/60R20, as published

One row per model and type, from each maker’s size table. LT first, then P-metric; sorted by diameter.

The math says 32.99″. 22 tires from 5 makers measure 32.90″–33.40″. Tallest here: Mickey Thompson Baja Boss A/T (all-terrain), 33.40″. Check the maker’s number before you buy for a tight fit.

Published dimensions for 275/60R20
Tire	Type	Diameter	Width	Rims, in	Weight	Tread	Max load
Mickey Thompson Baja Legend EXPmickeythompsontires.com · Oct 15, 2026	LT · E 123Q	32.90″	10.90″	7.5–9.5	59.0 lb	18.5/32″	3,415 lb @ 80 psi
Nitto Recon Grappler A/Tnittotire.com · Oct 15, 2026	LT · E 123/120S	32.99″	10.98″	8.0–9.5	55.0 lb	15.9/32″	3,415 lb @ 80 psi
Firestone Destination X/Tfirestonetire.com · Oct 15, 2026	LT · E 123R	33.00″	—	7.5–9.5	51.9 lb	16.0/32″	—
Kumho Road Venture AT52kumhotireusa.com · Oct 15, 2026	LT · D 119/116S	33.00″	11.00″	8.0–9.5	53.1 lb	16.0/32″	3,000 lb @ 65 psi
Toyo Open Country A/T IIItoyotires.com · Oct 15, 2026	LT · E 123/120T	33.00″	11.00″	8.0–9.5	55.0 lb	16.4/32″	3,415 lb @ 80 psi
Toyo Open Country H/T IItoyotires.com · Oct 15, 2026	LT · E 123/120R	33.00″	11.00″	7.5–9.5	55.0 lb	14.4/32″	3,415 lb @ 80 psi
Nitto Dura Grapplernittotire.com · Oct 15, 2026	LT · E 123/120R	33.03″	10.90″	8.0–9.5	56.5 lb	16.0/32″	3,415 lb @ 80 psi
Nitto Ridge Grapplernittotire.com · Oct 15, 2026	LT · E 123/120Q	33.23″	10.98″	8.0–9.5	59.1 lb	16.4/32″	3,415 lb @ 80 psi
Mickey Thompson Baja Boss A/Tmickeythompsontires.com · Oct 15, 2026	LT · E 123Q	33.40″	10.80″	7.5–9.5	64.0 lb	18.5/32″	3,415 lb @ 80 psi
Nitto Ridge Grapplernittotire.com · Oct 15, 2026	XL 116T	32.99″	10.98″	7.5–9.5	47.2 lb	13.5/32″	2,756 lb @ 50 psi
Nitto Recon Grappler A/Tnittotire.com · Oct 15, 2026	XL 116S	32.99″	10.98″	7.5–9.5	47.0 lb	13.5/32″	2,756 lb @ 50 psi
Nitto Terra Grappler G3nittotire.com · Oct 15, 2026	XL 116T	32.99″	10.98″	7.5–9.5	45.3 lb	13.5/32″	2,756 lb @ 50 psi
Firestone Destination A/T2firestonetire.com · Oct 15, 2026	SL 114S	33.00″	—	7.5–9.5	43.0 lb	12.0/32″	—
Firestone Destination LE3firestonetire.com · Oct 15, 2026	SL 115H	33.00″	—	7.5–9.5	39.3 lb	10.0/32″	—
Firestone Destination LE4firestonetire.com · Oct 15, 2026	SL 115H	33.00″	—	7.5–9.5	39.9 lb	12.0/32″	—
Kumho Road Venture AT52kumhotireusa.com · Oct 15, 2026	SL 115T	33.00″	11.00″	7.5–9.5	41.8 lb	13.5/32″	2,679 lb @ 51 psi
Kumho Road Venture RTkumhotireusa.com · Oct 15, 2026	XL 116T	33.00″	11.00″	7.5–9.5	47.9 lb	13.5/32″	2,756 lb @ 50 psi
Kumho Crugen HT51kumhotireusa.com · Oct 15, 2026	SL 114T	33.00″	11.00″	7.0–8.5	41.4 lb	12.5/32″	2,601 lb @ 51 psi
Toyo Open Country A/T IIItoyotires.com · Oct 15, 2026	XL 116H	33.00″	11.00″	7.5–9.5	46.0 lb	13.5/32″	2,756 lb @ 50 psi
Toyo Open Country R/T Trailtoyotires.com · Oct 15, 2026	SL 115T	33.00″	11.00″	7.5–9.5	44.0 lb	13.5/32″	2,679 lb @ 44 psi
Toyo Open Country H/T IItoyotires.com · Oct 15, 2026	SL 115T	33.00″	11.00″	7.5–9.5	44.0 lb	12.0/32″	2,679 lb @ 44 psi
Mickey Thompson Baja Boss A/Tmickeythompsontires.com · Oct 15, 2026	SL 115T	33.40″	10.80″	7.5–9.5	47.0 lb	16.0/32″	2,679 lb @ 44 psi

§ 1

Nominal dimensions and revs

By the formula 275/60R20 measures overall diameter 33.0 in (838 mm). Section width is 10.8 in (275 mm). Sidewall height is 6.5 in (165 mm). Rim is 20 in (508 mm).

Circumference is 103.6 in (2,633 mm). Revolutions per mile are 611 (380 per km). These are unloaded nominal numbers by the size math.

§ 2

What makers publish

Tire makers' size tables list 22 tires in 275/60R20 from 5 brands, with 9 LT and 13 P-metric or passenger versions. Load ranges shown in the tables include SL, XL, D and E.

Published overall diameters run from 32.9 in to 33.4 in against 32.99 in by the formula (−0.3% to +1.2%). Weights in the tables run from 39.3 lbs to 64 lbs. New tread depths run from 10/32 in to 18.5/32 in.

Mickey Thompson Baja Legend EXP LT275/60R20: overall diameter 32.9 in; section width 10.9 in; weight 59 lbs; tread depth 18.5/32 in. (Mickey Thompson)
Nitto Recon Grappler A/T LT275/60R20: overall diameter 32.99 in; overall width, inflated 10.98 in; weight 55 lbs; tread depth 15.9/32 in. (Nitto)
Toyo Open Country A/T III LT275/60R20: overall diameter 33 in; overall width, inflated 11 in; weight 55 lbs; tread depth 16.4/32 in; maker lists 630 revs per mile. (Toyo)

§ 3

Nearby sizes and changes

The neighbor table uses a ±3% overall-diameter window on similar rims. The ±3% window is a tire-shop rule of thumb, not a law.

Closely sized alternatives include 33x11.50R20 and 295/55R20. Differences can be small but affect speedometer reading, axle height and revolutions per mile.

33x11.50R20: diameter 0.0% (+0.01 in). At an indicated 60 mph the true speed is 60.0 mph; axle clearance change +0.00 in; revs per mile 611 → 611. See the comparison tool or the speedometer calculator.
295/55R20: diameter −0.7% (−0.22 in). At an indicated 60 mph the true speed is 59.6 mph (99.3 km/h); axle clearance change −0.11 in (−3 mm); revs per mile 611 → 615.

Fig. 2

275/60R20 and the sizes next to it

To scale, on one ground line. Diameter by the formula.

Table 4

Compare 275/60R20 with another size

Type any size: diameter, sidewall, speedometer and clearance change against this one.

Comparison

275/55R20 is 31.91″ tall, −3.28% against 275/60R20. At 60 mph on the dial you drive 58.0 mph.

275/60R20 vs 275/55R20
Item	275/60R20	275/55R20	Change
Overall diameter	32.99″	31.91″	−1.08″ −3.28%
Section width	10.83″	10.83″	0.00″
Sidewall	6.50″	5.95″	−0.54″
Circumference	103.6″	100.2″	−3.4″
Revs per mile	611	632	+21
Axle height	16.50″	15.95″	−0.54″

When the odometer counts 1,000 miles, you have driven 967.2 miles.

Engine RPM at the same road speed: +3.4%. Gear ratio calculator

Speedometer

Speedometer reading and true speed
Dial shows	True speed	Difference
30 mph	29.0 mph	−1.0
45 mph	43.5 mph	−1.5
60 mph	58.0 mph	−2.0
70 mph	67.7 mph	−2.3
80 mph	77.4 mph	−2.6

275/60R20275/55R20

Note 1

P-metric or LT in the same size

Nitto Recon Grappler A/T is published in both versions.

Nitto Recon Grappler A/T, 275/60R20: P and LT
Nitto Recon Grappler A/T	P · 116S	LT · E · 123/120S
Overall diameter	32.99″	32.99″
Max load	2,756 lb @ 50 psi	3,415 lb @ 80 psi
Weight	47.0 lb	55.0 lb
Tread depth	13.5/32″	15.9/32″
Approved rims	7.5–9.5″	8.0–9.5″

Source: Nitto size table, checked Oct 15, 2026. On trucks and SUVs, the load ratings of the tires on an axle must add up to at least the axle’s GAWR on the certification label (49 CFR 571.110).

Vehicles on 275/60R20: not listed yet. We add a vehicle here only from its maker’s own spec sheet for that year and trim.

The size your vehicle left the factory on is printed on the tire and loading placard on the driver’s door jamb (49 CFR 571.110). Pressure and load: that placard too.

Table 5

Within 3% of 275/60R20

Same rim or ±1″, diameter within 3%. A shop rule of thumb, not a law.

Sizes within 3% of 275/60R20
Size	Diameter	Width	vs 275/60R20	At 60 mph	Clearance
33x11.50R20	33.00″	11.5″	0.0%	60.0	0.00″
33x12.50R20	33.00″	12.5″	0.0%	60.0	0.00″
295/55R20	32.78″	11.6″	−0.7%	59.6	−0.11″
305/55R20	33.21″	12.0″	+0.7%	60.4	+0.11″
265/60R20	32.52″	10.4″	−1.4%	59.1	−0.24″
285/60R20	33.46″	11.2″	+1.4%	60.9	+0.24″
285/55R20	32.34″	11.2″	−2.0%	58.8	−0.32″
295/60R20	33.94″	11.6″	+2.9%	61.7	+0.47″
305/50R20	32.01″	12.0″	−3.0%	58.2	−0.49″

Comparisons

Other 20″ sizes

Q&A

Common questions

How big is a 275/60R20 in inches?

By the formula it is 33.0 in (838 mm) overall, with a 10.8 in (275 mm) section width and a 6.5 in (165 mm) sidewall.

How many revolutions per mile does 275/60R20 make?

Nominal revolutions per mile are 611 (380 per km). Some maker tables list slightly different rev counts for specific models.

Are LT versions available for 275/60R20?

Yes. Makers list 22 tires in this size from 5 brands, including 9 LT versions and 13 P-metric versions; listed load ranges include SL, XL, D and E.

Where is the tire pressure and load information for my vehicle?

See the tire and loading placard on the driver's side B-pillar for the vehicle maker's recommended cold inflation pressures. The tire sidewall shows the maximum load rating and, for LT tires, the load range letter (49 CFR 571.110; 49 CFR 571.139).

Notes

Method and sources

Each number and rule comes from a source with the date it was checked.

Sidewall = width × aspect ratio ÷ 100
Diameter = rim × 25.4 + 2 × sidewall (mm)
Revs per mile = 63,360 ÷ (π × diameter, in)
True speed = dial × new diameter ÷ old diameter
Clearance change = half the diameter change

Numbers are nominal: the tire unloaded, on its measuring rim. Revs per mile published by makers run higher than the formula. “Within 3%” is a rule of thumb tire shops use, not a law. Tire pressure: the placard on your door jamb.

Mickey Thompson: size table (mickeythompsontires.com)checked Oct 15, 2026
Nitto: size table (nittotire.com)checked Oct 15, 2026
Toyo: size table (toyotires.com)checked Oct 15, 2026
Nitto: size table (nittotire.com)checked Oct 15, 2026
49 CFR 571.139 (FMVSS No. 139), S5.5(d)ecfr.gov · checked Oct 15, 2026
49 CFR 571.110 (FMVSS No. 110), S4.3ecfr.gov · checked Oct 15, 2026

Calculators and size classes

33″22 metric and 11 flotation sizes measure 32.5–33.5″ by the formula305/70R16 · 285/75R16 · 295/75R16 · 305/65R17 · 285/70R17 35″15 metric and 16 flotation sizes measure 34.5–35.5″ by the formula315/75R16 · 325/65R18 · 305/70R18 · 285/75R18 · 285/65R20 37″3 metric and 13 flotation sizes measure 36.5–37.5″ by the formula385/70R16 · 315/80R17 · 375/45R24