Compare tire sizes, calculate speedometer differences, and find your perfect fit
Metric tire sizes follow the format: Width/Aspect Ratio R Rim Diameter. For example, 225/60R16 means 225mm width, 60% aspect ratio, and 16-inch rim.
R = Radial (most common, flexible sidewalls), D = Diagonal/Bias (older design, stiffer ride), RF = Run Flat (limited drive after puncture), B = Belted Bias (combines features).
Found after tire size (e.g., 98H). Load index is weight capacity per tire (98 = 1,653 lbs). Speed rating is max safe speed (H = 130 mph, V = 149 mph, W = 168 mph).
Plus sizing increases wheel diameter while decreasing sidewall height to keep overall diameter similar — better handling, sometimes firmer ride.
Larger tires can improve traction/looks but may reduce acceleration and fuel economy. Always verify clearance at full lock and compression.
Changing diameter alters speedometer readings. ~3% difference is usually acceptable; bigger changes may need recalibration.
New tires must meet or exceed the vehicle's load rating. Check your door placard or owner's manual.
Narrower tires can help in snow; wider tires can improve dry grip. Choose seasonally.
Our Denver team can help you find the perfect tire size for your vehicle. Free quotes, professional fitment checks, and same-day installation available.
