LT325/65R18
Truck / LTFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The LT325/65R18 tire size features an overall diameter of 34.63 inches, a section width of 12.8 inches (325mm), and rotates 582 times per mile. It is a standard factory tire fitment on 5+ vehicle models including Dodge 1500.
Physical Dimensions & Specs
Overall Diameter
34.63"
879.6 mmSection Width
325 mm
12.80" wideSidewall Height
8.32"
211.3 mm (65% aspect)Revolutions / Mile
582
Circumference: 108.81"Rim Diameter
18"
Wheel sizeRecommended Rim Width
8.1" - 11.4"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare LT325/65R18 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)325/65R18
Overall Height:34.6"
Sidewall:8.3"
Revs/Mile:582
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-14.6%At 60 mph reading, actual speed is 51.2 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 17.1 mph | -2.9 mph |
| 30 mph | 25.6 mph | -4.4 mph |
| 45 mph | 38.4 mph | -6.6 mph |
| 60 mph | 51.2 mph | -8.8 mph |
| 75 mph | 64.0 mph | -11.0 mph |
| 90 mph | 76.9 mph | -13.1 mph |
Fender & Suspension Clearance
Fitment Status: MODERATE RISK
Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.
Inner Strut Space:7.7mm LESS clearance
Outer Fender Push:Extends 17.7mm further out
Ride Height Delta:-2.53" lower ground clearance
Vehicles That Fit LT325/65R18 (5+ Models)
Factory standard and optional vehicle fitments utilizing LT325/65R18 tires: