LT235/80R18
Truck / LTFactory Specs, Physical Dimensions & Compatible Vehicle Applications
The LT235/80R18 tire size features an overall diameter of 32.8 inches, a section width of 9.3 inches (235mm), and rotates 615 times per mile. It is a standard factory tire fitment on 24+ vehicle models including Chevrolet Silverado 3500 HD.
Physical Dimensions & Specs
Overall Diameter
32.8"
833.1 mmSection Width
235 mm
9.25" wideSidewall Height
7.4"
188.0 mm (80% aspect)Revolutions / Mile
615
Circumference: 103.05"Rim Diameter
18"
Wheel sizeRecommended Rim Width
5.9" - 8.2"
Optimal rim width rangeWhere to Buy & Install LT235/80R18 Tires
Looking for LT235/80R18 tires? Skip hauling tires in your car—choose direct delivery to a local certified shop or doorstep delivery:
Tire Rack
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Amazon Automotive
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Speedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare LT235/80R18 against any proposed tire size below:
Visual Tire & Wheel Comparison
Speedometer Variance
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 18.0 mph | -2.0 mph |
| 30 mph | 27.0 mph | -3.0 mph |
| 45 mph | 40.6 mph | -4.4 mph |
| 60 mph | 54.1 mph | -5.9 mph |
| 75 mph | 67.6 mph | -7.4 mph |
| 90 mph | 81.1 mph | -8.9 mph |
Fender & Suspension Clearance
Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.
Vehicles That Fit LT235/80R18 (24+ Models)
Factory standard and optional vehicle fitments utilizing LT235/80R18 tires: