Data sheet TS-275/70R17 · Size
275/70R17 in inches
275/70R17 measures 32.2 in (817 mm) overall diameter by the formula. Section width is 10.8 in (275 mm) and revolutions per mile are 627.
Fig. 1 — Cross-section
Table 1 — Nominal dimensions
| Item | in | mm |
|---|---|---|
| DOverall diameter | 32.16 | 817 |
| ASection width | 10.83 | 275 |
| BSidewall | 7.58 | 192.5 |
| CRim | 17 | 431.8 |
| Circumference | 101.0 | 2,566 |
| Revs per mile · km | 627 | 390 |
| Flotation size printed | 32X11.00R17LT | Mickey Thompson |
|---|---|---|
| Measuring rim | 8″ | Kumho LT |
| Approved rims | 7.0–8.5, 7.0–9.0″ | 7 LT tires |
Table 2 — Measured range
32.20–32.50″overall diameter, 9 tires from 5 makers (math: 32.16″)
49–55 lbweight, 7 LT versions
13.5–18.5/32″new tread depth
3,195–3,525 lbmax load per tire, 6 of 7 LT versions list it, as published
7 LT · 2 Pversions in the makers’ tables we read
All 9 tires ↓Table 3
9 tires in 275/70R17, 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 32.16″. 9 tires from 5 makers measure 32.20″–32.50″. Tallest here: Mickey Thompson Baja Legend EXP (all-terrain), 32.50″. Check the maker’s number before you buy for a tight fit.
| Tire | Type | Diameter | Width | Rims, in | Weight | Tread | Max load |
|---|---|---|---|---|---|---|---|
| Firestone Destination X/Tfirestonetire.com · Oct 15, 2026 | LT · E 121R | 32.20″ | — | 7.0–8.5 | 49.1 lb | 16.0/32″ | — |
| Kumho Road Venture AT52kumhotireusa.com · Oct 15, 2026 | LT · E 121/118R | 32.20″ | 11.00″ | 7.0–9.0 | 49.7 lb | 16.0/32″ | 3,195 lb @ 80 psi |
| Nitto Ridge Grapplernittotire.com · Oct 15, 2026 | LT · E 121/118Q | 32.20″ | 10.98″ | 7.0–9.0 | 54.0 lb | 16.5/32″ | 3,195 lb @ 80 psi |
| Nitto Terra Grappler G3nittotire.com · Oct 15, 2026 | LT · E 124/121S | 32.20″ | 10.98″ | 7.0–9.0 | 49.9 lb | 15.9/32″ | 3,525 lb @ 80 psi |
| Toyo Open Country A/T IIItoyotires.com · Oct 15, 2026 | LT · E 121/118T | 32.20″ | 11.00″ | 7.0–9.0 | 51.0 lb | 16.4/32″ | 3,195 lb @ 80 psi |
| Toyo Open Country R/T Trailtoyotires.com · Oct 15, 2026 | LT · E 124/121S | 32.20″ | 11.00″ | 7.0–9.0 | 51.0 lb | 16.4/32″ | 3,525 lb @ 80 psi |
| Mickey Thompson Baja Legend EXPmickeythompsontires.com · Oct 15, 2026 | LT · E 121Q | 32.50″ | 10.70″ | 7.0–9.0 | 55.0 lb | 18.5/32″ | 3,195 lb @ 80 psi |
| Nitto Recon Grappler A/Tnittotire.com · Oct 15, 2026 | XL 116T | 32.20″ | 10.98″ | 7.0–9.0 | 46.8 lb | 13.5/32″ | 2,756 lb @ 50 psi |
| Toyo Open Country R/T Trailtoyotires.com · Oct 15, 2026 | XL 116T | 32.20″ | 11.00″ | 7.0–9.0 | 42.0 lb | 13.5/32″ | 2,756 lb @ 50 psi |
§ 1
Nominal measurements
Overall diameter by the formula: 32.2 in (817 mm). Section width by the formula: 10.8 in (275 mm). Sidewall height by the formula: 7.6 in (193 mm). Rim diameter: 17 in (432 mm).
Circumference by the formula: 101.0 in (2,566 mm). Revolutions per mile by the formula: 627 (390 per km). These are unloaded, nominal values computed from the size formula.
§ 2
What makers publish
Makers' size tables list 9 tires in 275/70R17 from Firestone, Kumho, Nitto, Toyo and Mickey Thompson: 7 LT and 2 P-metric versions. Published load ranges include XL and E. (Size tables checked October 15, 2026.)
Published overall diameters run 32.2 in to 32.5 in versus the 32.16 in nominal number (+0.1% to +1.1%). Published weights run 42 lbs to 55 lbs. New tread depths run 13.5/32 in to 18.5/32 in.
- Firestone Destination X/T LT275/70R17: diameter 32.2 in; weight 49.1 lbs; tread 16/32 in. (Firestone)
- Toyo Open Country A/T III LT275/70R17: diameter 32.2 in; maker lists 645 revs per mile; weight 51 lbs; tread 16.4/32 in. (Toyo)
- Mickey Thompson Baja Legend EXP LT275/70R17: diameter 32.5 in; weight 55 lbs; tread 18.5/32 in; maker lists equivalent 32X11.00R17LT. (Mickey Thompson)
§ 3
Closest sizes and changes
The neighbor list uses a ±3% overall-diameter window. The ±3% window is a tire-shop rule of thumb, not a law. Sizes inside that window include 275/65R18, 255/75R17, 255/70R18 and 305/60R18. (Neighbor method checked October 15, 2026.)
Example changes: to 275/65R18 the diameter is −0.3% (−0.08 in, −2 mm); an indicated 60 mph becomes a true 59.8 mph (an indicated 100 km/h becomes 99.7 km/h); axle ground clearance changes by −0.04 in (−1 mm); revs per mile 627 → 629. To 255/75R17 the diameter is −0.3% (−0.10 in, −3 mm) with the same 59.8 mph true speed at 60 indicated.
- 275/65R18: 32.1 in, −0.3% (60 indicated → 59.8 mph).
- 255/75R17: 32.1 in, −0.3% (60 indicated → 59.8 mph).
- 305/60R18: 32.4 in, +0.8%.
Fig. 2
275/70R17 and the sizes next to it
To scale, on one ground line. Diameter by the formula.
Table 4
Compare 275/70R17 with another size
Type any size: diameter, sidewall, speedometer and clearance change against this one.
Comparison
265/70R17 is 31.61″ tall, −1.71% against 275/70R17. At 60 mph on the dial you drive 59.0 mph.
| Item | 275/70R17 | 265/70R17 | Change |
|---|---|---|---|
| Overall diameter | 32.16″ | 31.61″ | −0.55″ −1.71% |
| Section width | 10.83″ | 10.43″ | −0.39″ |
| Sidewall | 7.58″ | 7.30″ | −0.28″ |
| Circumference | 101.0″ | 99.3″ | −1.7″ |
| Revs per mile | 627 | 638 | +11 |
| Axle height | 16.08″ | 15.80″ | −0.28″ |
When the odometer counts 1,000 miles, you have driven 982.9 miles.
Engine RPM at the same road speed: +1.7%. Gear ratio calculator
Speedometer
| Dial shows | True speed | Difference |
|---|---|---|
| 30 mph | 29.5 mph | −0.5 |
| 45 mph | 44.2 mph | −0.8 |
| 60 mph | 59.0 mph | −1.0 |
| 70 mph | 68.8 mph | −1.2 |
| 80 mph | 78.6 mph | −1.4 |
275/70R17265/70R17
Note 1
P-metric or LT in the same size
Toyo Open Country R/T Trail is published in both versions.
| Toyo Open Country R/T Trail | P · 116T | LT · E · 124/121S |
|---|---|---|
| Overall diameter | 32.20″ | 32.20″ |
| Max load | 2,756 lb @ 50 psi | 3,525 lb @ 80 psi |
| Weight | 42.0 lb | 51.0 lb |
| Tread depth | 13.5/32″ | 16.4/32″ |
| Approved rims | 7.0–9.0″ | 7.0–9.0″ |
Source: Toyo 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 275/70R17: 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 275/70R17
Same rim or ±1″, diameter within 3%. A shop rule of thumb, not a law.
| Size | Diameter | Width | vs 275/70R17 | At 60 mph | Clearance |
|---|---|---|---|---|---|
| 275/65R18 | 32.07″ | 10.8″ | −0.3% | 59.8 | −0.04″ |
| 255/75R17 | 32.06″ | 10.0″ | −0.3% | 59.8 | −0.05″ |
| 255/70R18 | 32.06″ | 10.0″ | −0.3% | 59.8 | −0.05″ |
| 305/60R18 | 32.41″ | 12.0″ | +0.8% | 60.5 | +0.13″ |
| 235/80R17 | 31.80″ | 9.3″ | −1.1% | 59.3 | −0.18″ |
| 235/85R16 | 31.73″ | 9.3″ | −1.3% | 59.2 | −0.21″ |
| 285/65R18 | 32.59″ | 11.2″ | +1.3% | 60.8 | +0.21″ |
| 285/70R16 | 31.71″ | 11.2″ | −1.4% | 59.2 | −0.22″ |
| 265/70R18 | 32.61″ | 10.4″ | +1.4% | 60.8 | +0.22″ |
| 305/65R17 | 32.61″ | 12.0″ | +1.4% | 60.8 | +0.23″ |
Q&A
Common questions
How many revolutions per mile does 275/70R17 make?
By the formula 275/70R17 makes 627 revolutions per mile (390 per km).
Are LT and P versions available in 275/70R17?
Yes. Makers' tables list 9 tires: 7 LT versions and 2 P-metric versions, with load ranges including XL and E. (Size tables, checked October 15, 2026.)
How much do real tires vary from the nominal size?
Published overall diameters run 32.2 in to 32.5 in versus the 32.16 in nominal number, a range of about +0.1% to +1.1%.
Where do I find the vehicle's recommended pressure and load limits?
See the tire and loading placard on the driver's door jamb for the vehicle maker’s recommended cold inflation pressures and loads (49 CFR 571.110). The tire sidewall shows the maximum load rating and, for LT tires, the load range letter (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.
- Firestone: size table (firestonetire.com)checked Oct 15, 2026
- Toyo: size table (toyotires.com)checked Oct 15, 2026
- 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
- 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
Related
Calculators and size classes
- Tire size calculatorTwo sizes: diameter, sidewall, revs and speedometer.
- Compare up to 4 sizesUp to four sizes side by side, drawn to scale.
- Metric ↔ inchesMetric to inches, and 33x12.50R20 to metric.
- Speedometer errorTrue speed after a size change.
- Gear ratio and RPMEngine RPM and the ratio to regear to.
- Wheel offset and pokeBackspacing, poke and inner clearance.
- DOT date codeHow old a tire is, from the DOT number.
- Load index chartLoad index in pounds and kilograms.
- Bolt patternMeasure it, convert inches to mm.
- Rim size and tire fitWhat 17x8 ET35 means, which sizes go on it.
- What fits my carStart from the placard on the door.
- Tire size chartCommon sizes in inches, by rim.