📏 TIRE SIZE TELEMETRYSUV / Light Truck Spec
275/70R18
Pressure & Fitment Telemetry
Complete dimensional analysis, recommended cold inflation pressure, sidewall height, revolutions per mile, and ETRTO/TRA fitment specifications for 275/70R18.
⚡ RECOMMENDED COLD PRESSURE (QUICK SUMMARY)
36 PSI
(2.48 Bar / 248 kPa)
Baseline Standard: Estimated cold pressure for standard load passenger/SUV applications. Always cross-reference with the official tire placard on your driver-side door jamb.
275/70R18 Dimensions & Geometry
Section Width
275 mm
10.83 inchesSidewall Height
192.5 mm
7.58 inchesOverall Diameter
842.2 mm
33.16 inchesRevolutions / Mile
608
At 60 mphPressure Adjustments for 275/70R18
🎒 Full Cargo & Heavy Passengers
When carrying maximum passengers or heavy trunk cargo, increase cold pressure by +3 to +4 PSI (39 PSI total) to maintain carcass structural integrity and prevent shoulder tire wear.
❄️ Winter & Cold Weather Drops
Ambient temperature drops reduce air pressure by ~1 PSI per 10°F (5.5°C). If ambient temperatures drop from 70°F to 30°F, set cold inflation to 40 PSI in a warm garage to avoid driving under-inflated.