LT305/70R18
Truck / LTFactory Specs, Physical Dimensions & Compatible Vehicle Applications
The LT305/70R18 tire size features an overall diameter of 34.81 inches, a section width of 12.0 inches (305mm), and rotates 579 times per mile. It is a standard factory tire fitment on 4+ vehicle models including Chevrolet Silverado 2500 HD.
Physical Dimensions & Specs
Overall Diameter
34.81"
884.2 mmSection Width
305 mm
12.01" wideSidewall Height
8.41"
213.6 mm (70% aspect)Revolutions / Mile
579
Circumference: 109.36"Rim Diameter
18"
Wheel sizeRecommended Rim Width
7.6" - 10.7"
Optimal rim width rangeWhere to Buy & Install LT305/70R18 Tires
Looking for LT305/70R18 tires? Skip hauling tires in your car—choose direct delivery to a local certified shop or doorstep delivery:
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Amazon Automotive
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Speedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare LT305/70R18 against any proposed tire size below:
Visual Tire & Wheel Comparison
Speedometer Variance
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 17.0 mph | -3.0 mph |
| 30 mph | 25.5 mph | -4.5 mph |
| 45 mph | 38.2 mph | -6.8 mph |
| 60 mph | 51.0 mph | -9.0 mph |
| 75 mph | 63.7 mph | -11.3 mph |
| 90 mph | 76.5 mph | -13.5 mph |
Fender & Suspension Clearance
Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.
Vehicles That Fit LT305/70R18 (4+ Models)
Factory standard and optional vehicle fitments utilizing LT305/70R18 tires: